Harcourt Math Challenge Workbook Grade 2 Teachers Edition

ChallengeWorkbook

T E A C H E R S E D I T I O NGrade 2

Orlando Boston Dallas Chicago San Diegowww.harcourtschool.com

H

arco

urt

Copyright by Harcourt, Inc.

All rights reserved. No part of this publication may be reproduced or transmitted in anyform or by any means, electronic or mechanical, including photocopy, recording, or anyinformation storage and retrieval system, without permission in writing from thepublisher.

Permission is hereby granted to individual teachers using the corresponding studentstextbook or kit as the major vehicle for regular classroom instruction to photocopycomplete student pages from this publication in classroom quantities for instructionaluse and not for resale.

Duplication of this work other than by individual classroom teachers under theconditions specified above requires a license. To order a license to duplicate this workin greater than classroom quantities, contact Customer Service, Harcourt, Inc., 6277 Sea Harbor Drive, Orlando, Florida 32887-6777. Telephone: 1-800-225-5425.Fax: 1-800-874-6418 or 407-352-3445.

HARCOURT and the Harcourt Logo are trademarks of Harcourt, Inc.

Printed in the United States of America

ISBN 0-15-320672-1

2 3 4 5 6 7 8 9 10 082 2004 2003 2002 2001

Unit 1: ADDITION AND SUBTRACTIONSTRATEGIES AND FACTS, PLACEVALUE, AND GRAPHING

Chapter 1: Addition Strategies1.1 Order and Zero Properties . . . . . . . . 11.2 Count On 1, 2, and 3 . . . . . . . . . . . . . 21.3 More Doubles . . . . . . . . . . . . . . . . . . 31.4 Make a Ten . . . . . . . . . . . . . . . . . . . . . 41.5 Add Three Numbers . . . . . . . . . . . . . 51.6 Problem Solving Mystery

Numbers! . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 2: Subtraction Strategies2.1 All or Nothing . . . . . . . . . . . . . . . . . . 72.2 Count Back with Arrows . . . . . . . . . 82.3 Add or Subtract? . . . . . . . . . . . . . . . . 92.4 Fact Family Fun . . . . . . . . . . . . . . . . 102.5 Express Yourself! . . . . . . . . . . . . . . . 11

Chapter 3: Addition and SubtractionPractice3.1 Puzzler . . . . . . . . . . . . . . . . . . . . . . . . 123.2 Furnish the Facts . . . . . . . . . . . . . . . 133.3 Break the Code . . . . . . . . . . . . . . . . 143.4 Problem Solving Missing

Information . . . . . . . . . . . . . . . . . . . . 15

Chapter 4: Numbers to 1004.1 Fruit by the Numbers . . . . . . . . . . . 164.2 Riddles with Tens and Ones . . . . . 174.3 Place Me . . . . . . . . . . . . . . . . . . . . . . 184.4 Number Match . . . . . . . . . . . . . . . . . 194.5 Marble Madness . . . . . . . . . . . . . . . 20

Chapter 5: Number Patterns, Compareand Order5.1 Book Hunt . . . . . . . . . . . . . . . . . . . . . 215.2 Greater Than, Less Than,

Equal To . . . . . . . . . . . . . . . . . . . . . . . 22

5.3 Where Am I? . . . . . . . . . . . . . . . . . . . 235.4 Number Shape Up . . . . . . . . . . . . . 245.5 Arrow Count . . . . . . . . . . . . . . . . . . 255.6 Patterns in Charts . . . . . . . . . . . . . . 26

Chapter 6: Data and Graphing6.1 Sky Graph . . . . . . . . . . . . . . . . . . . . . 276.2 Leaf Collection . . . . . . . . . . . . . . . . 286.3 Veggies, Veggies . . . . . . . . . . . . . . . . 296.4 Food Favorites . . . . . . . . . . . . . . . . . 306.5 Book Data . . . . . . . . . . . . . . . . . . . . . 316.6 Reading for Ribbons! . . . . . . . . . . . 32

Unit 2: MONEY AND TIME

Chapter 7: Counting Money7.1 More or Less Money . . . . . . . . . . . . 337.2 The Same Amount . . . . . . . . . . . . . 347.3 Money in the Bank . . . . . . . . . . . . . 357.4 Money Trees . . . . . . . . . . . . . . . . . . . 367.5 School Supply Store . . . . . . . . . . . . 37

Chapter 8: Using Money8.1 50 All . . . . . . . . . . . . . . . . . . . . . . . . 388.2 Coin Puzzles . . . . . . . . . . . . . . . . . . . 398.3 What Can I Buy? . . . . . . . . . . . . . . . 408.4 Get Money Back . . . . . . . . . . . . . . . 418.5 Ways to Make 25 . . . . . . . . . . . . . . 42

Chapter 9: Telling Time9.1 Time Trail . . . . . . . . . . . . . . . . . . . . . 439.2 Hour After Hour . . . . . . . . . . . . . . . 449.3 After and Before . . . . . . . . . . . . . . . 459.4 Please Tell Me the Time! . . . . . . . . 46

Chapter 10: Understanding Time10.1 Activities of the Day . . . . . . . . . . . 4710.2 Elapsed Time . . . . . . . . . . . . . . . . . . 4810.3 Circle the Dates . . . . . . . . . . . . . . . 4910.4 Write the Time . . . . . . . . . . . . . . . . 5010.5 Order Time . . . . . . . . . . . . . . . . . . . . 51

CONTENTS

Unit 3: 2-DIGIT ADDITION ANDSUBTRACTION

Chapter 11: Explore 2-Digit Addition11.1 Facts and Addition of Tens . . . . . . 5211.2 Hidden Numbers . . . . . . . . . . . . . . . 5311.3 Addition Estimates . . . . . . . . . . . . . 5411.4 Addition Story Problems . . . . . . . . 5511.5 Zoo Story . . . . . . . . . . . . . . . . . . . . . 56

Chapter 12: 2-Digit Addition12.1 Circus Algebra . . . . . . . . . . . . . . . . . 5712.2 Colorful Addition . . . . . . . . . . . . . . 5812.3 What Is Missing? . . . . . . . . . . . . . . . 5912.4 Matching Estimates . . . . . . . . . . . . 60

Chapter 13: Practice 2-Digit Addition13.1 Balloon Addition . . . . . . . . . . . . . . . 6113.2 Mental Matching . . . . . . . . . . . . . . . 6213.3 Addition Rainbow . . . . . . . . . . . . . . 6313.4 Graphing Around the World . . . . . 64

Chapter 14: Explore 2-Digit Subtraction14.1 Missing Tens . . . . . . . . . . . . . . . . . . . 6514.2 Tens or Ones? . . . . . . . . . . . . . . . . . 6614.3 Names for Numbers . . . . . . . . . . . . 6714.4 Subtraction Zoo . . . . . . . . . . . . . . . 6814.5 Dragon Subtraction . . . . . . . . . . . . 69

Chapter 15: 2-Digit Subtraction15.1 Cross Over . . . . . . . . . . . . . . . . . . . . 7015.2 Riddle Time . . . . . . . . . . . . . . . . . . . 7115.3 Which Way? . . . . . . . . . . . . . . . . . . . 7215.4 About How Many Stickers? . . . . . . 7315.5 House of Numbers . . . . . . . . . . . . . 74

Chapter 16: Practice 2-Digit Subtraction16.1 Short Cuts . . . . . . . . . . . . . . . . . . . . . 7516.2 What Is It? . . . . . . . . . . . . . . . . . . . . 7616.3 At the Market . . . . . . . . . . . . . . . . . 7716.4 Shopping Trip . . . . . . . . . . . . . . . . . . 78

Unit 4: GEOMETRY ANDMEASUREMENT

Chapter 17: Plane Shapes17.1 Picture Shapes . . . . . . . . . . . . . . . . . 7917.2 Match the Sides . . . . . . . . . . . . . . . 8017.3 More Symmetry . . . . . . . . . . . . . . . . 8117.4 Triangle Challenge . . . . . . . . . . . . . 8217.5 Make Them Fit . . . . . . . . . . . . . . . . . 8317.6 Move It! . . . . . . . . . . . . . . . . . . . . . . 84

Chapter 18: Solid Figures18.1 Will It Stack? . . . . . . . . . . . . . . . . . . 8518.2 Shape Trace . . . . . . . . . . . . . . . . . . . 8618.3 Riddle . . . . . . . . . . . . . . . . . . . . . . . . 8718.4 Build Your Own . . . . . . . . . . . . . . . . 88

Chapter 19: Length19.1 From the Top . . . . . . . . . . . . . . . . . . 8919.2 Long Lines, Short Lines . . . . . . . . . 9019.3 Feet and Inches Together . . . . . . . . 9119.4 Know the Ropes! . . . . . . . . . . . . . . . 9219.5 Comparing Perimeters . . . . . . . . . . 9319.6 Give an Inch . . . . . . . . . . . . . . . . . . . 94

Chapter 20: Capacity, Weight, andTemperature20.1 Liquid Measure . . . . . . . . . . . . . . . . 9520.2 The Water Machine . . . . . . . . . . . . 9620.3 Balancing Act . . . . . . . . . . . . . . . . . . 9720.4 Puzzle Time . . . . . . . . . . . . . . . . . . . 9820.5 The Weather Outside . . . . . . . . . . 9920.6 What Can You Measure? . . . . . . . 100

Unit 5: NUMBER SENSE ANDFRACTIONS

Chapter 21: Numbers to 1,00021.1 Hundreds Match . . . . . . . . . . . . . . 10121.2 Change the Model . . . . . . . . . . . . 10221.3 Number Scramble . . . . . . . . . . . . . 10321.4 Place Value Riddles . . . . . . . . . . . . 10421.5 Solve the Mystery . . . . . . . . . . . . . 105

Chapter 22: Comparing and OrderingNumbers to 1,00022.1 Addition and Subtraction of

Hundreds . . . . . . . . . . . . . . . . . . . . 10622.2 Number Cube Roll . . . . . . . . . . . . 10722.3 Missing Numbers . . . . . . . . . . . . . . 10822.4 Missing Numbers in Patterns . . . 10922.5 Problem Solving Write

the Rule . . . . . . . . . . . . . . . . . . . . . . 110

Chapter 23: Parts of a Whole23.1 Drawing Parts . . . . . . . . . . . . . . . . . . 11123.2 Finding Fractions . . . . . . . . . . . . . . 11223.3 Fabulous Fractions . . . . . . . . . . . . . 11323.4 Which Is Greater? . . . . . . . . . . . . . 11423.5 How Much More? . . . . . . . . . . . . . . 115

Chapter 24: Parts of a Group24.1 Show the Same Fraction . . . . . . . . 11624.2 Show Ways to Share . . . . . . . . . . . 11724.3 Animal Fractions . . . . . . . . . . . . . . 11824.4 Compare Fractions

Everywhere . . . . . . . . . . . . . . . . . . . 11924.5 Problem Solving Compare

Fractions of Food . . . . . . . . . . . . . 120

Unit 6: 3-DIGIT ADDITION ANDSUBTRACTION, MULTIPLICATION ANDDIVISION

Chapter 25: Adding 3-Digit Numbers25.1 Hundreds and More . . . . . . . . . . . . 12125.2 How Many Flowers? . . . . . . . . . . . 12225.3 3-Digit Addition . . . . . . . . . . . . . . 12325.4 Help the Frog Find the Pond . . . . 12425.5 Add Dollars and Cents . . . . . . . . . 12525.6 An Adding Pattern . . . . . . . . . . . . . 126

Chapter 26: Subtracting 3-Digit Numbers26.1 Subtraction Secret . . . . . . . . . . . . 12726.2 3-Digit Code . . . . . . . . . . . . . . . . . . 12826.3 Raining Hundreds . . . . . . . . . . . . . 12926.4 3-Digit Message . . . . . . . . . . . . . . . 13026.5 Whats Missing? . . . . . . . . . . . . . . . . 131

Chapter 27: Use Addition andSubtraction27.1 Lets Go Shopping! . . . . . . . . . . . . . 13227.2 Estimating Costs . . . . . . . . . . . . . . . 13327.3 Adding and Subtracting Fish . . . . 13427.4 Problem Solving One Step

at a Time . . . . . . . . . . . . . . . . . . . . . 135

Chapter 28: Multiplication Concepts28.1 Team Players . . . . . . . . . . . . . . . . . . 13628.2 Two Ways . . . . . . . . . . . . . . . . . . . . . 13728.3 Making Arrays . . . . . . . . . . . . . . . . . 13828.4 Related Multiplication Facts . . . . 13928.5 Find the X-it . . . . . . . . . . . . . . . . . . 140

Chapter 29: Multiplication Facts 2, 5, and 1029.1 Draw to Multiply . . . . . . . . . . . . . . 14129.2 Groups of 5 . . . . . . . . . . . . . . . . . . . 14229.3 Multiply with 10 . . . . . . . . . . . . . . . 14329.4 Number Roll . . . . . . . . . . . . . . . . . . 144

Chapter 30: Division Concepts30.1 Draw Equal Shares . . . . . . . . . . . . . 14530.2 Find Equal Groups . . . . . . . . . . . . . 14630.3 Divide to Solve . . . . . . . . . . . . . . . 14730.4 Problem Solving Write the

Number Sentence . . . . . . . . . . . . . 14830.5 Problem Solving Division

Strategies . . . . . . . . . . . . . . . . . . . . 149

NameLESSON 1.1

H

arco

urt

Challenge CW1

H

arco

urt

Order and Zero PropertiesWrite the sum.

Then write the addition sentence another way.

1. 2 + 3 =

+ =

3. 6 + 1 =

+ =

5. 0 + 5 =

+ =

7. 1 + 4 =

+ =

9. 7 + 3 =

+ =

2. 4 + 5 =

+ =

4. 7 + 0 =

+ =

6. 2 + 5 =

+ =

8. 8 + 2 =

+ =

10. 0 + 1 =

+ = 101

1

1082

10

725

7

770

7

945

9

1073

10

514

5

505

5

761

7

523

5

NameLESSON 1.2

H

arco

urt

CW2 Challenge

Count On 1, 2, and 3Write the addition sentences.

1.7

2.3

3.5

4.

6

5.4

6.2

7.1

8.7

Count on 1.

+ =

+ =

+ =

+ =

+ =

+ =

+ =

+ = 817

211

312

514

716

615

413

817

Count on 2.

+ =

+ =

+ =

+ =

+ =

+ =

+ =

+ = 927

321

422

624

826

725

523

927

Count on 3.

+ =

+ =

+ =

+ =

+ =

+ =

+ =

+ = 1037

431

532

734

936

835

633

1037

H

arco

urt

Challenge CW3

More DoublesThe first day Beth collected 1 shell. Each dayafter that, she collected double the numbershe collected the day before, plus 1. Color inthe graph to show how many shells shecollected.

How many shells did Beth collect on Day 4? shells15

NameLESSON 1.3

Number of Shells Collected

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Day 1

Day 2

Day 3

Day 4

NameLESSON 1.4

H

arco

urt

CW4 Challenge

Make a TenWrite the sum. Use the code to solve the word puzzle.

1. 2. 3. 4.

5. 6. 7. 8. 9.

10. 11. 12. 13. 14. 4+ 2

6

4+ 4

8

7+ 411

6+ 3

9

8+ 513

3+ 4

7

9+ 615

8+ 816

5+ 914

5+ 510

9+ 817

6+ 713

7+ 512

8+ 311

6 7 8 9 10 11 12 13 14 15 16 !17

! N E O I M A T S U F H

1. 2. 3. 4.

M A T

5. 6. 7. 8. 9.

10.!

11. 12. 13. 14.

H I S F U N

T O !EM

NameLESSON 1.5

H

arco

urt

Challenge CW5

Add Three NumbersUse three number cubes.Work with a friend.Roll to make addends.Write the sum.

Roll 1 Roll 2 Roll 3 Sum

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Answers will vary.

NameLESSON 1.6

1. The sum is 16.The first number is 7.What is the other number?

3. A number is subtracted from16. The difference is 7. What is the number?

5. The subtracted number is 4. The difference is 8. What is the other number?

2. The sum is 14.The first number is 8.What is the other number?

4. A number is subtracted from13. The difference is 5.What is the number?

6. The subtracted number is 6.The difference is 9.What is the other number?

H

arco

urt

CW6 Challenge

Problem Solving Mystery Numbers!Solve.

+

7

169 +

8

146

16

79

13

58

48

12

69

15

NameLESSON 2.1

H

arco

urt

Challenge CW7

H

arco

urt

All or NothingWrite a zero in the number sentence.Then complete the sentence.Draw a picture to show.

1. 8 =

2. 4 =

3. 9 =

4. 3 =

5. 6 = 60

30

09

40

08

Answers will vary.Possible answers aregiven.

H

arco

urt

CW8 Challenge

Count Back with ArrowsFollow the arrows. Count back.

means count back 1.means count back 2.means count back 3.

NameLESSON 2.2

1. 8

2.

10

3. 9

4.

4

5.

58

26

125

57

26

3479

47

6

Answers will vary; one possibility shown.

H

arco

urt

Challenge CW9

Add or Subtract?Write the addition or subtraction sentence. Solve.

NameLESSON 2.3

1. Li has 8 pens. Brad had 15 pensShe bought 7 more. He gave away 7.How many pens How many pensdoes she have now? does he have left?

= =

2. Marco had 9 shells. Maria had 18 shells.He found 9 more. She gave 9 to herHow many shells friends. How many shellsdoes Marco have now? does Maria have now?

= =

3. Tamika had 9 stamps. Gino had 14 stamps.Then she got 5 more. He gave 5 away. How manyHow many stamps stamps does he have left?does she have in all?

= = 95141459

99181899

8715157+8

NameLESSON 2.4

H

arco

urt

CW10 Challenge

Fact Family FunCut out and mix up the number cards. Place them face down in 2 piles. Pick one card from each pile. Write the numbers in the boxes. Complete the fact family. Answers will vary.

1. + = =

+ = =

2. + = =

+ = =

3. + = =

+ = =

4. + = =

+ = =

5 6 7 8 9

5 6 7 8 9

H

arco

urt

Challenge CW11

Express Yourself!The sum of the numbers on each floorequals the number on top. Write themissing addends.

1. 2.

NameLESSON 2.5

2 + 2

1 + 3

4 + 0

1

4

3 +

0 +

21 + + 1

21 + 1 +

+ 1 + 11 1+

4

+ 12 1+

Check childrenswork. The sum ofeach row ofnumbers is thenumber at the top.

3 + 22 + 3

1 + 4

0 + 5

1 + 2+ 2

2 + 1 + 2

3 + 1 + 1

+ 12 + 1 1+

1 + 1 + 1 + 1 1+

5

H

arco

urt

CW12 Challenge

Puzzler Answers will vary. Some possible answers are given.Each line must have a sum of 13.Write 1, 2, 3, 4, 5, 6, 7, or 8 in each circle. For each puzzle, use a numberonly once.

1. 2.

3. 4.

NameLESSON 3.1

4

6

2 83

2

6

7 15

3

6

8 14

3

4

5 26

H

arco

urt

Challenge CW13

Furnish the Facts Write addition sentences.

NameLESSON 3.2

Answers will vary.

1. Use doubles.

+ =

+ =

+ =

3. Use doubles minus 1.

+ =

+ =

+ =

5. Count on 2.

+ =

+ =

+ =

2. Use doubles plus 1.

+ =

+ =

+ =

4. Count on 1.

+ =

+ =

+ =

6. Count on 3.

+ =

+ =

+ =

H

arco

urt

CW14 Challenge

Break the CodeEach letter stands for either 0, 2, 4, or 6. Add or subtract to break the code.

1. 2. 3.

4. 5. 6.

NameLESSON 3.3

B

+B

C 4

2

2 B

+D

B 2

0

2 C

D

C 4

0

4

B

+C

A 6

4

2 A

D

A 6

0

6 A

C

B 2

4

6

Code BoxA=B=C=D= 0

426

H

arco

urt

Challenge CW15

Problem Solving: Missing Information Work with a partner. Is anything missing? If so, write what you need to know. If not, write the number sentence.

1. There are 16 red flowers.There are yellow flowers, too.How many flowers are there in all?

I need to know

+ = flowers

2. Jenny has 6 red shirts and 5 green shirts.How many shirts does she have?

I need to know

+ = shirts

3. Garrett has 6 grapes.He ate some of them.How many grapes does he have left?

I need to know

+ = grapes

111156

NameLESSON 3.4

how many grapes he ate.

how many yellow flowers there are.

H

arco

urt

CW16 Challenge

Fruit by the NumbersWhich is greater?Circle the number or the picture.

1.

2.

3.

4.

5.

NameLESSON 4.1

or 70

or 20

or 40

or 50

or 80

H

arco

urt

Challenge CW17

Riddles with Tens and OnesWritw the number.

NameLESSON 4.2

1. I have 6 tens. I have 7 ones.What number am I?

3. I have 3 more tens than 27.What number am I?

5. I have 2 less tens than 65.What number am I?

7. I have 1 less ten and 1 moreone than 33. What numberam I?

2. I have 8 ones. I have 5tens. What number am I?

4. I have 6 more ones than51. What number am I?

6. I have 3 less ones than 76.What number am I?

8. I have 2 more tens and 5less ones than 39. Whatnumber am I?

54

73

57

58

24

45

57

67

H

arco

urt

CW18 Challenge

Place Me

NameLESSON 4.3

1. Write a number whose tensdigit is 3 more than itsones digit.

3. Write a number whose tensdigit is one less than itsones digit.

5. Write a number whose tensdigit is less than its ones digit.

2. Write a number whoseones digit is 5 more thanits tens digit.

4. Write a number whoseones digit is 2 less thanits tens digit.

6. Write a number whoseones digit is less thanits tens digit.

91

75

27

19

34

52

Answers will vary. Possibilities shown.

H

arco

urt

Challenge CW19

Number MatchRead the number. Match.

1. eighteen

2. fifty-seven

3. seventy-five

4. thirty-four

5. eighty-nine

6. forty-three

7. ninety-eight

NameLESSON 4.4

3 tens 4 ones

18

50 7

4 tens 3 ones

98

70 5

89

H

arco

urt

CW20 Challenge

Marble Madness

This jar has about 40 marbles.

Write an estimate.

NameLESSON 4.5

1.

about marbles

3.

about marbles

5.

about marbles

2.

about marbles

4.

about marbles

6.

about marbles70

25

80

30

60

20

Answers will vary. Possibilities are shown.

Name

Har

cour

t

Challenge CW21

H

arco

urt

LESSON 5.1

Book Hunt

In which book could you read about each animal?Circle the correct answer.

1.

first ninth sixteenthrabbits

2.

second sixth tenthfrogs

3.

fourth eleventh eighteenthturtles

4.

fifteenth twelfth twentiethzebras

5.

tenth eighth thirteenthkangaroos

6.

seventh third eleventhcats

NameLESSON 5.2

H

arco

urt

CW22 Challenge

Greater Than, Less Than, Equal ToWrite , , or to make a true sentence.

1. 2.

7 6 14 8 8 16

3. 4.

12 13 19 6 9 12

5. 6.

4 9 8 11 9 21

7. 8.

15 7 8 8 4 7 3

9. 10.

14 8 1 17 8 12

11. 12.

15 7 5 17 9 8

13. 14.

34 10 22 25 14 19

15. 16.

27 13 40 66 33 33

>

>

>>

H

arco

urt

Where Am I?Read the riddle. Write the answer.

NameLESSON 5.3

1. I am the number that comesbefore 29 and after 27. Whatnumber am I?

3. I am the number that comesbefore 38 and after 36. Whatnumber am I?

5. These numbers comebetween 78 and 83. Whatnumbers are they?

, , ,

7. These numbers come after91 and before 95. Whatnumbers are they?

, ,

2. I am the number that comesbetween 45 and 47. Whatnumber am I?

4. I am the number that comesbetween 78 and 80. Whatnumber am I?

6. These numbers come before57 and after 53. Whatnumbers are they?

, ,

8. These numbers comebetween 40 and 44. Whatnumbers are they?

, , 434241

565554

79

46

949392

82818079

37

28

Challenge CW23

NameLESSON 5.4

H

arco

urt

CW24 Challenge

Number Shape Up

Use the clues to answer the riddle.Then circle even or odd.

1. This number is inside thesquare. It is also inside thetriangle. What number is it?

even odd

3. This number is inside thetriangle. The number isgreater than 9. What numberis it?

even odd

2. This number is inside only thecircle. The number is lessthan 5. What number is it?

even odd

4. This number is inside thesquare. It is also inside thecircle. The number is greaterthan 6. What number is it?

even odd

7

2

10

6

Name

Har

cour

t

Challenge CW25

Arrow Count

means 2 more means 3 more

means 4 more means 5 more

means 10 more

Follow the arrows to fill in the boxes.

1.

2.

3.

383526215

483330119

2924205

2722101

36341813

2422108start

start

start

finish

finish

finish

LESSON 5.5

NameLESSON 5.6

H

arco

urt

CW26 Challenge

Patterns in ChartsComplete the charts.Use the charts to answer the questions.

1. Travis wants to buy 5 toy cars. How much money does he need?

2. Whitney wants to buy 7 toy cars.How much money does she need?

3. Jade has 80. How many toy cars can she buy? toy cars

1. How many shoes do 4 children need?

2. There are 6 shoes. How many children will wear them?

3. There are 14 shoes. Howmany children will wear them?

4. How many shoes do 5 children need? 10 shoes

7 children

3 children

8 shoes

8

70

50

1 2 3 4 5 6 7 8

10 20 30 40 50 60 70 80

number ofchildren 1 2 3 4 5 6 7 8

number ofshoes 2 4 6 8 10 12 14 16

Name

Har

cour

t

Challenge CW27

H

arco

urt

LESSON 6.1

Sky GraphThe graph shows what Heather saw inthe sky during one week.

Write questions about the graph.Give them to a classmate to answer.

Questions andanswers will vary.

What Heather Saw in the Sky

hot-air balloons

helicopters

airplanes

blimps

NameLESSON 6.2

H

arco

urt

CW28 Challenge

Leaf CollectionThis bar graph shows how many leaves childrencollected for a science project.

1. How many leaves did Beth collect? leaves

2. How many more leaves did Lanicollect than Felix? more leaves

3. How many leaves did Beth and Raycollect altogether? leaves

4. How many leaves did Lani and Felixcollect altogether? leaves

5. Make up a question about the graph. Give it to a classmate toanswer.

55

45

15

20

Leaves Collected

Beth

Lani

Felix

Ray0 5 10 15 20 25 30 35

Questions and answers will vary.

H

arco

urt

NameLESSON 6.3

Challenge CW29

1. How many in all like broccoli or peas the best?

+ = in all

2. How many more chose carrots than peas?

= more

3. How many in all like peas, corn, or broccoli the best?

+ + = in all

4. Use the graph. Write a question for each number sentence.

6 + 4 = 10

13643

437

936

Our Favorite Vegetables

corn

carrots

broccoli

peas

Our Favorite Vegetablescorn

carrots

broccoli

peas

0 1 2 3 4 5 6 7 8

Veggies, VeggiesUse the tally table to make a graph.Use the graph to answer the questions.

4 3 = 1

Questions will vary. Possible answers are given.

How many in all like broccoli or corn?

How many more like corn than peas?

Food FavoritesAsk 10 classmates these questions.

1. Do you like hamburgers or hot dogs better?

2. Do you like mustard, mayonnaise,or ketchup best?

3. Do you like juice or lemonade withyour hamburger or hot dog?

Write two things you learned from your survey.

4.

5.

mustard

mayonnaise

ketchup

NameLESSON 6.4

H

arco

urt

CW30 Challenge

Answers will vary.Sample answers are given.

More people like hamburgers than hot dogs.

More people like juice than lemonade.

hamburgers

hot dogs

juice

lemonade

Name

Har

cour

t

Challenge CW31

LESSON 6.5

Book DataChildren in Mrs. Webbs class who read 50 books join the50 Book Club.

Add. Write Yes or No to tell whether the child joins the club.

Color the graph to show how manybooks each child read.

Books Read

Name Before After Total Joined theJanuary January Club?

Bob 10 30 40 NoEllen 20 30 50 YesKen 20 40 60 YesJoan 10 40 50 YesAmy 20 10 30 No

Books Read

Bob

Ellen

Ken

Joan

Amy

0 10 20 30 40 50 60

NameLESSON 6.6

H

arco

urt

CW32 Challenge

Reading for Ribbons!This graph shows how many bookseach child read in March. The childwho read the most books won aribbon.

Each stands for 4 books.

1. How many books did Bill read? books

2. How many books did Jessie read? books

3. How many more books did Bill read than Maria? books

4. How many books did Maria and Candi read altogether? books

5. How many books did the winner read? books

6. How many fewer books did Jessie read than Candi? books

7. Who read fewer than 12 books? Maria82028

81216

Books Read

Maria

Candi

Bill

Jessie

NameLESSON 7.1

H

arco

urt

Challenge CW33

H

arco

urt

1.

2.

3.

4.

5.

More or Less MoneyWork with a friend.Choose who will be A and who will be B.Who has the greater amount in each row? Circle it.If you both have the same amount, color the coins.

A B

NameLESSON 7.2

H

arco

urt

CW34 Challenge

1. Ann buys a muffin that costs 55. She uses 3 coins.Write how many of each coin.

2. Make 55 with 2 coins. Write how many of each coin.

3. Make 55 with 5 coins.Write how many of each coin.

221

11

12

The Same AmountAnn can use different numbers of coins to make the same amount of money. Can you?

H

arco

urt

Challenge CW35

Money in the BankCircle the fewest coins that show the amount.

1. 2.

3. 4.

NameLESSON 7.3

14 26

18 52

NameLESSON 7.4

H

arco

urt

Money TreesFollow the path.Stop at each tree and circle the greater amount.

CW36 Challenge

NameLESSON 7.5

H

arco

urt

Challenge CW37

School Supply Store

Use the table.Choose coins to buy supplies.Draw the coins. Count up the total.

1. Paper and an eraser 2. A marker and an eraser

Total Total

3. Paper and a sharpener 4. Pencil and a sharpener

Total Total 5887

6068

School Supplies Price

Paper 50

Sharpener 37

Marker 42

Eraser 18

Pencil 21

25 5

1 1 110

255

11

1 1

1

10 10

101010

25 5

1 110

10

10

25 505

11 1

Answers will vary.

H

arco

urt

CW38 Challenge

NameLESSON 8.1

50 AllCircle the coins you need.

Circle two coins that make 50.

Circle four coins that make 50.

Circle six coins that make 50.

Circle seven coins that make 50.

1.

2.

3.

4.

H

arco

urt

Challenge CW39

Coin PuzzlesSolve. Draw the coins.

1. Ivan has 43.He has 9 coins.What coins does he have?

43

2. Brittany has 43.She has 6 coins.What coins does she have?

43

3. Jacob has 65.He has 5 coins.What coins does he have?

65

4. Whitney has 65.She has 3 coins.What coins does she have?

65

NameLESSON 8.2

10

10

10

25

25

50

25

10 5

5

5

5

5 5

55 5 1 1 1

1 1 1

H

arco

urt

CW40 Challenge

NameLESSON 8.3

What Can I Buy?Solve. Write the amount.Circle what the person can buy.

1. Drew has 4 dimesand 3 nickels.How much moneydoes he have?

2. Maria has 2 quarters,1 dime, 2 nickels, and1 penny. How muchmoney does she have?

3. Sue has 3 quarters,1 dime, and 1 nickel.How much money doesshe have?

4. Jamila has 2 quarters,2 dimes, and 3 pennies.How much money does she have?

73

90

71

55

90

62 45

89

62

75

95

9289

6275

90

H

arco

urt

Challenge CW41

Get Money BackUse punchout coins. Use the fewest coins to show the change. Trace the coins and write the value on each one. Then write the amount of change in all.

Price Pay Change

1.

60 75

change

2.

27 50

change

3.

31 50

change

4.

51 75

change24

19

23

15

NameLESSON 8.4

10

10

10 10

105

5

1 1 1

1

1

11

101

1

11

H

arco

urt

CW42 Challenge

Ways to Make 25Maria has 25. What coins could there be?Make a list to find out.

Pennies Nickels Dimes Quarters

25 0 0 020 1 0 015 2 0 0

15 0 1 0

10 3 0 0

10 1 1 0

5 4 0 0

5 2 1 0

5 0 2 0

0 5 0 0

0 3 1 0

0 1 2 0

0 0 0 1

How many ways can you make 25? 13

NameLESSON 8.5

H

arco

urt

Challenge CW43

NameLESSON 9.1

H

arco

urt

Time TrailDraw a line to the clock that comes next.

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

218

910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

H

arco

urt

CW44 Challenge

NameLESSON 9.2

Hour After HourDraw the hour hand and minute hand to show the time.

1. 20 minutes after 3





8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

H

arco

urt

Challenge CW45

NameLESSON 9.3

After and BeforeWrite the time.1. :

minutes after

minutes before

2. :

minutes after

minutes before

3. :

minutes after

minutes before

4. :

minutes after

minutes before

5. :

minutes after

minutes before

6. :

minutes after

minutes before 315

245

452

1225

1135

3511

115

1055

5510

1015

945

459

610

550

505

720640

406

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

H

arco

urt

CW46 Challenge

Please Tell Me the Time!Draw the hour hand and the minute hand to show the time.

1.

1:15

4.

4:25

7.

6:30

10.

11.55

2.

9:30

5.

7:50

8.

10:35

11.

3:45

3.

12:20

6.

2:10

9.

8:05

12.

7:45

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

NameLESSON 9.4

H

arco

urt

Challenge CW47

Activities of the DayWrite the time you do each activity.

Then circle A.M. or P.M.

NameLESSON 10.1

Answers will vary.

1.wake up : A.M. P.M.

2.eat dinner : A.M. P.M.

3.brush teeth before school : A.M. P.M.

4.do homework : A.M. P.M.

5.have math class : A.M. P.M.

6.go to bed : A.M. P.M.

7.get dressed for school : A.M. P.M.

8.eat lunch : A.M. P.M.

9.read before bed : A.M. P.M.

10.eat breakfast : A.M. P.M.

H

arco

urt

CW48 Challenge

Elapsed Time

Use a to help solve the problem.8

910

11 12

7 6 543

21

NameLESSON 10.2

1. It is now 8:30.The mall will close in30 minutes. What time will the mall close?

3. The play starts at 2:30.It will end in 2 hours.What time will the play end?

5. The game ended at 4:00.It had taken 1 hour. Whattime did the game begin?

7. The test starts at 1:00.It wil end in 30 minutes.What time will the test end?

2. The race begins at 10:00.It will end in 1 hour.What time will the race end?

4. It is now 3:45. We will beat Grandpas house in 30minutes. What time will webe at his house?

6. The baby woke up at 3:00.He had slept for 1 hour.What time did he go to sleep?

8. The zoo trip ended at 5:30.It had lasted 2 hours.What time did the zootrip start?

3:30

2:00

4:15

11:00

1:30

3:00

4:30

9:00

H

arco

urt

Challenge CW49

NameLESSON 10.3

Circle the Dates

Circle the dates on the calendar.

1. one week after February 52. four days after March 263. two weeks before January 154. the last Thursday in November5. the fourth Tuesday in April6. two weeks before February 37. five days after the third Sunday in June8. eight days before October 20

H

arco

urt

CW50 Challenge

NameLESSON 10.4

Write the TimeAbout how long will it take? Answers will vary.

1. eat breakfast about minutes

2. read a book about hours

3. wash the dog about minutes

4. have a birthday party about hours

5. take a bath about minutes

6. go away for the weekend about days

H

arco

urt

Challenge CW51

Put in order from shortest to longest.

1. 50 weeks, 13 months, 1 year

, ,

2. 10 weeks, 2 months, 50 days

, ,

3. 1 month, 7 weeks, 32 days

, ,

4. 2 months, 6 weeks, 64 days

, , 64 days2 months6 weeks

7 weeks32 days1 month

10 weeks2 months50 days

13 months1 year50 weeks

NameLESSON 10.5

Order Time

H

arco

urt

CW52 Challenge

NameLESSON 11.1

Facts and Addition of TensUse addition facts to help add tens.

Add.

23

+ 16

1.

4.

7.

10.

2.

5.

8.

11.

3.

6.

9.

12. 2040

+ 30

24

+ 3

4020

+ 10

42

+ 1

1010

+ 10

11

+ 1

1020

+ 10

12

+ 1

2020

+ 20

22

+ 2

1010

+ 70

11

+ 7

4020

+ 20

42

+ 2

3030

+ 30

33

+ 3

1030

+ 40

13

+ 4

5010

+ 20

51

+ 2

1060

+ 20

16

+ 2

2030

+ 10

60 90 4049

38 80909

798

968

30

9080 70

6080 90

H

arco

urt

Challenge CW53

Hidden NumbersWhat was added to change the number?Write the number.

NameLESSON 11.2

1. 32 52

was added.

3. 11 17

was added.

5. 48 68

was added.

7. 33 83

was added.

9. 51 91

was added.

2. 50 52

was added.

4. 25 85

was added.

6. 34 37

was added.

8. 26 30

was added.

10. 51 59

was added.8

4

3

60

2

40

50

20

6

20

H

arco

urt

CW54 Challenge

Addition EstimatesEstimate without finding the sum.Circle the better estimate.

1.

greater than 20 greater than 20 greater than 20

less than 20 less than 20 less than 20

2.



3.



4.



59+ 8

44+ 5

45+ 6

36+ 7

32+ 6

37+ 5

28+ 8

27+ 9

26+ 3

17+ 5

14+ 4

16+ 6

NameLESSON 11.3

H

arco

urt

Challenge CW55

Addition Story ProblemsUse . Add.Use the boxes for your work.

NameLESSON 11.4

Check childrens work.1. There are 17 boys at the skating

rink.16 girls join them. Now there

are children at the rink.33

2. There are 19 robins in the maple

tree. Then 18 wrens join them.

There are birds in all in the

maple tree.

37

3. I have 18 pennies.

I save 23 more.

Now I have pennies.41

4. Marcys mom baked 24 corn

muffins.Then she baked 12

bran muffins. She baked

muffins in all.36

5. Len counted 29 oak trees in the

park. Then he counted 19 elm

trees. He counted

trees in all.

48

17+ 16

33

H

arco

urt

CW56 Challenge

Zoo StoryWrite the correct answer. Use if you need to.

NameLESSON 11.5

1. There are 18 monkeys in thezoo. There are 15 snakes inthe zoo. How many monkeysand snakes are there at thezoo?

monkeys and snakes

3. Mark took photos of13 animals. Neil took photos of18 animals. How many photosof animals did the two boystake?

photos

5. Jill bought 13 tiger erasers atthe gift shop. Joan bought16 monkey erasers. Howmany erasers did they buy?

erasers

7. The snack shop sold 28 bagsof peanuts. It sold 31 bags ofpopcorn. How many bags of popcorn and peanuts did theshop sell?

bags

2. Bills class read 12 booksabout the zoo. Jons classread 11. How many booksabout the zoo did the twoclasses read?

books

4. Maria fed the elephant19 peanuts. Tim fed it16 peanuts. How manypeanuts did they feed theelephant?

peanuts

6. The petting zoo had 12 goatsand 14 sheep. How manygoats and sheep were there atthe petting zoo?

goats and sheep

8. Nico bought 14 bear stickersat the zoo. Hans bought18 bird stickers. How manystickers did they buy in all?

stickers32

26

35

23

59

29

31

33

H

arco

urt

Challenge CW57

NameLESSON 12.1

Circus AlgebraUse Workmat 3 and . Write the missing addend.

30

34

429

32

385

94

976

82

6

25

32

753

61

813

20

746

54

8

74

77

392

99

745

51

663

71

8

43

50

764

69

565

74

957

647

1.

2.

3.

4.

H

arco

urt

CW58 Challenge

NameLESSON 12.2

Colorful AdditionUse Workmat 3 and . Color the answer.

Joey had 75 cards.He bought 11 more.Then Pat gave him 5 cards. How many cards does he have in all?Color the answer blue.

Felicia had 14 books.Latoya gave her 25 more.Then her mom gave her 3 books. How many books does she have in all?Color the answer yellow.

Kenny had 27 marbles.Joey gave him 30 more.Then Dan gave him 5 marbles. How many marbles does he have in all?Color the answer purple.

Ellen had 64 pencils.Tracy gave her 13 more.Then Ellen found 4 pencils. How many pencils does she have in all?Color the answer green.

Nilda had 46 stickers.Renaldo gave her 15 more.Then she got 3 stickers from Max. How many stickers does she have in all?Color the answer red.

1.

2.

3.

4.

5.

42

62

91blue

64red

81green

purple

yellow

H

arco

urt

Challenge CW59

NameLESSON 12.3

tens ones

2

4

16

1

5

1 1

tens ones

2

3

06

1

5

What Is Missing?Use Workmat 3 and . Write the missing number.

tens ones

3

5

25

9

4

tens ones

4

7

24

2

8

1

tens ones

4

9

44

2

8

1

tens ones

6

6

12

7

5

1

tens ones

5

9

36

5

9

1

tens ones

4

8

34

2

8

1

tens ones

3

4

17

5

8

1

1. 2. 3.

4. 5. 6.

7. 8. 9.

H

arco

urt

CW60 Challenge

NameLESSON 12.4

Matching EstimatesMatch each story to the best estimate.

Mark had 48 pennies on Monday.He earned 24 pennies on Tuesday.He earned 21 pennies on Wednesday.About how many pennies does he have in all?

Mary wants to buy 3 toys.A car costs 19 pennies. A ball costs 19 pennies. A marble costs 8 pennies.About how many pennies does she need in all?

Ann wants to buy 3 marbles. Each marble costs 9 pennies. About how many pennies does she need?

Julio takes 3 spoonfuls of raisins. The first spoonful has 22 raisins. The second has 21 raisins. The third has 38 raisins. About how many raisins does he have in all?

1.

2.

3.

4.

30

90

80

50

H

arco

urt

Balloon AdditionAngela and her friends blew up balloons for the school fair. Solve the problems. Then complete the table.

Write how many balloons each person blew up. Circle the one who blew up the most balloons.

NameLESSON 13.1

H

arco

urt

Challenge CW61

1. Angela blew up 17 balloons.Courtney blew up 18 more. Howmany balloons did they blow upin all?

balloons

3. Courtney blew up 25 balloons.She blew up 20 more. Howmany balloons did she blow up in all?

balloons

2. Before lunch Jacob blew up14 balloons. After lunch heblew up 27 more. How manyballoons did he blow up in all?

balloons

4. Angela blew up 45 more balloons. Jacob blew up17 more. How many moreballoons did they blow up in all?

balloons62

41

45

35

Angela Courtney Jacob

17 18 41

45 45 17

Total 62 63 58

H

arco

urt

CW62 Challenge

NameLESSON 13.2

Mental MatchingMatch each math story to the mental math sum.

1. Lane has 69 pennies.Kara has 16 pennies.How many pennies are there in all?

2. Matt has 54 pennies.Anna has 31 pennies.How many pennies are there in all?

3. Chris has 59 pennies.Kevin has 36 pennies.How many pennies are there in all?

4. Liz has 74 pennies.Shannon has 21 pennies.How many pennies are there in all?

5. Rachel has 37 pennies.Rory has 38 pennies.How many pennies are there in all?

6. Michael has 31 pennies.Rita has 44 pennies.How many pennies are there in all?

80 + 5 = 85

90 + 5 = 95

70 + 15 = 85

60 + 15 = 75

70 + 5 = 75

80 + 15 = 95

H

arco

urt

Challenge CW63

Addition RainbowWrite the sum.Then use the chart to color the rainbow.

NameLESSON 13.3

3039 =

6069 =

4049 =

7079 =

9099 =

5059 =

8089 =

37+ 57

94

26+ 55

81

39+ 29

68

21+ 19

40

51+ 21

72

14+ 17

31

28+ 29

57

43+ 5295

red

purpleyellowblue

green

white

orange

R

O

Y G B P

W

H

arco

urt

CW64 Challenge

NameLESSON 13.4

Graphing Around the WorldAll second grade students are doing reports on other countries.

1. Complete the graph to show how many students wrote about each country.

Each stands for 5 students.

Use the graph to answer the questions.

2. How many students in all wrote reports on China or Trinidad?

3. How many students did not write about Syria?

4. How many second graders are there?

5. How many more students wrote about Trinidad than Ireland?

25

9570

50

Reports Done

China 20

Ireland 5

Mexico 15

Syria 25

Trinidad 30

Reports Done

China

Ireland

Mexico

Syria

Trinidad

0 5 10 15 20 25 30 35

H

arco

urt

Challenge CW65

NameLESSON 14.1

Missing TensWrite the missing number.

1.

4.

7.

10.

2.

5.

8.

11.

3.

6.

9.

12.

80

60

2050

40

10

80

10

70

60

30

90

40

0

40 80

0

80

20

10

10 60

10

70

30

20

50

90

20

70

80

40

40

10

80

90

H

arco

urt

CW66 Challenge

NameLESSON 14.2

Tens or Ones?Write how much you count back.

1. 28 18

Count back .

3. 96 94

Count back .

5. 96 76

Count back .

7. 61 31

Count back .

9. 42 40

Count back .

11. 81 80

Count back .

2. 35 32

Count back .

4. 85 55

Count back .

6. 72 62

Count back .

8. 61 58

Count back .

10. 53 33

Count back .

12. 17 7

Count back .10

20

3

10

30

3

1

2

30

20

2

10

H

arco

urt

Challenge CW67

NameLESSON 14.3

1. 46 tens ones

2. 57 tens ones

3. 75 tens ones

4. 24 tens ones

5. 38 tens ones

6. 41 tens ones

7. 53 tens ones

8. 92 tens ones

9. 84 tens ones

10. 61 tens ones

11. 73 tens ones

12. 52 tens ones

13. 43 tens ones

14. 66 tens ones165

133

124

136

115

147

128

134

113

182

141

156

174

163

Names for NumbersWrite how many tens and ones there are after you regroup 1 ten as 10 ones.

H

arco

urt

CW68 Challenge

NameLESSON 14.4

Subtract 13.

92 7938 2569 56

Subtract 27.

59 3263 3681 54

Subtract 39.

79 4059 2091 52

Subtract 22.

98 7678 5671 49

Subtract 48.

50 248 088 40

Subtract 12.

37 2523 1165 53

1. 2.

4.3.

6.5.

Subtraction ZooFollow the rule to complete the table.

48 19

29

44 27

17

26 22

4

25 16

9

43 28

15

44 25

19

51 33

18

27 16

11

19 12

7

48 22

26

28 14

14

35 22

13

A

G

O

C

I

S

D

L

T

E

N

!

H

arco

urt

Challenge CW69

NameLESSON 14.5

Dragon SubtractionSubtract. Find the answer to the riddle.

What is the best way to call a dragon?

!29

E7

C14

N15

A13

T17

S4

I18

D26

G11

N15

O9

L19

H

arco

urt

CW70 Challenge

NameLESSON 15.1

Cross OverSubtract. Color the circles in which you regrouped.

1.

2.

3.

4.

5. Draw 2 lines to connect the colored circles.Circle the pattern that you see.

Z X A

52 38

14

63 51

12

55 42

13

61 24

37

25 14

11

36 9

27

47 8

39

14 11

3

85 42

43

51 16

35

63 17

46

92 81

11

76 29

47

44 34

10

25 12

13

40 28

12

3 10

5 13 4 11

3 17 2 16

6 16

5 11 4 12

color color

color

color color

color color

color

H

arco

urt

Challenge CW71

Riddle TimeSubtract.Match each answer with a letter in the table to solve the riddle.

B E H L73 15 43 37O S U T0 48 10 29

1. 2. 3. 4.

96 23 73 36 34 24 62 47

5. 6. 7. 8.

64 16 81 38 43 43 30 15

What do you call a sad sneaker? Answer: shoeblue

EOHS

EULB

NameLESSON 15.2

96 23

73

73 36

37

64 16

48

81 38

43

43 43

0

30 15

15

34 24

10

62 47

15

H

arco

urt

CW72 Challenge

Which Way?Which way should Critter go to get to the tree? He must take the path with answers greater than 40. Subtract. Then draw a line to show the correct path!

NameLESSON 15.3

93 69

24

8 1393

3756

8 13

91 33

58

8 11

43 26

17

3 13

78 59

19

6 1881

738

7 11

43 27

16

3 13 59 14

45

66 25

41

76 21

55

62 20

42

87 56

31

H

arco

urt

Challenge CW73

About How Many Stickers?Members of the Sticker Club gave away some of their stickers.

Each subtraction problem shows how many stickers a member had and how many stickers the member gave away.Estimate. Match the subtraction problems to the club members.

Mei has about 70 stickers left.

Ben has about 60 stickers left.

Sari has about 50 stickers left.

Kara has about 40 stickers left.

Jos has about 30 stickers left.

Lee has about 20 stickers left.

Jake has about 10 stickers left.

Keith has about 0 stickers left.

NameLESSON 15.4

80 27

71 4883 49

81 3967 59

92 2984 78

83 11

House of NumbersAdd or subtract. Use your answers to complete the puzzle.

Across

1. 3. 6. 7. 8.

Down

2. 4. 5. 6. 7. 81 28

53

66 15

51

40 16

24

36 19

17

54 25

29

42+ 21

63

19+ 33

52

29+ 29

58

58+ 33

91

34+ 28

62

H

arco

urt

CW74 Challenge

NameLESSON 15.5

4

1 1 11

14 2 16 3 10 7 11

6 2 2

7

19 4

25

36

85

1

1 2

3 4

5

76

8

H

arco

urt

Challenge CW75

1. 71 57 = 2. 50 9 =

57 is close to . 9 is close to .

Add to 71 and 57. Add to 50 and 9.

So, = . So, = .

3. 76 54 = 4. 85 66 =



So, = . So, = .

5. 92 58 = 6. 68 59 =



So, = . So, = .96170346094

22

7060

934

197089225880

44

7080

1922

41105114607413

1060

4114

NameLESSON 16.1

H

arco

urt

Short CutsUse mental math to think through each problem.Fill in the blanks. Solve.

H

arco

urt

CW76 Challenge

NameLESSON 16.2

What Is It?Subtract.Color to find the hidden picture.

If you regroup, color the shape .

If you do not regroup, color the shape .

47 10

37

63 50

13

90 80

10

72 23

49

99 90

9

91 64

27

80 13

67

61 12

4985

20 65

90 24

66

75 59

1682

60 22

34 30

4

71 40

31

orange

blue

B

B

B

B B

B

BB

O

O O

O

O

O

H

arco

urt

Challenge CW77

NameLESSON 16.3

At the Market

Add to find out how much you pay.

1. 2.

3. 4.

Subtract to find the amount you have left.

5. You have 90. 6. You have 25.

7. You have 74. 8. You have 61.

61 22

39

74 69

5

25 619

90- 30

60

14+ 822

10+ 25

35

11+ 78

89

20+ 22

42

814

22

20

11

7822

306

78251020

11

69

30 6

10

25

69

22

14

8

H

arco

urt

CW78 Challenge

NameLESSON 16.4

Shopping Trip

Use the picture. Solve.

1. Sammy has 85. If he buys crayonsand a kite, how much money will he have left?

2. Karla has 90. If she buys an apple and boots, how much money will she have left?

3. Robin has 99. She spends 88 for a clown and crayons. How much more does she need to buy a kite?

4. Ben has 95. He spends 57 for a kite and an apple. How much more does he need to buy boots?

75 38

37

95 57

38 37

47 11

36

99 88

11 36

90 85

5

10+ 75

85 5

85 79

6

32+ 47

796

7547

56

32

10

157

8 10

815 615

H

arco

urt

Challenge CW79

Picture Shapes

Draw a picture using squares, triangles, circles, rectangles, and ovals. Answers will vary.

Name LESSON 17.1

Write how many you drew.

1. squares _______ 2. triangles _____ 3. circles _____

4. rectangles _____ 5. ovals _____

H

arco

urt

CW80 Challenge

Match the SidesLook at the figures in each row.Find two figures whose dashed sides are the same length. Circle those figures.

1.

2.

3.

4.

5.

NameLESSON 17.2

H

arco

urt

Challenge CW81

More SymmetryDraw a line of symmetry when you can.Some letters have no lines of symmetry.

1.

2.

3.

4.

5.

NameLESSON 17.3

H

arco

urt

CW82 Challenge

Triangle ChallengeWork with a partner. Each use a different color. Drawlines to make triangles in the square.

Use tally marks to record the triangles you made.

NameLESSON 17.4

Answers will vary.

My s.

Your s.

H

arco

urt

Challenge CW83

NameLESSON 17.5

Make Them FitCut out the shapes to fit the puzzle. You may flip and turn the shapes.

Use one shape at a time. Write howmany of each shape it takes to fill therectangle.

4 6 2

Move It!Draw what the piece looks like after each move. Use .

1.

Start Turn Flip Slide2.

Start Flip Flip Flip3.

Start Slide Turn Slide4.

Start Flip Turn Turn

H

arco

urt

CW84 Challenge

NameLESSON 17.6

Answers will vary. Possible drawings are given.

H

arco

urt

Challenge CW85

Will It Stack?Cross out the stacks that could not be made.

1. 2.

3. 4.

5. 6.

NameLESSON 18.1

H

arco

urt

CW86 Challenge

Shape TraceDraw a plane shape you could trace.

1. 2.

3. 4.

5. 6.

NameLESSON 18.2

Check childrens work.Some answers may vary.

H

arco

urt

Challenge CW87

RiddleWhat happens if you drop a yellow rock into the Red River?

Write the numbers. Use the table to change each number to a letter.

0 1 2 3 4 5 6 7 8

T G W R N S H A E

It

.TEW

082

STEG

5081

NameLESSON 18.3

cone? yes 1 no 2

edges on faces on corners on

sphere? yes 1 no 2

corners on corners on

H

arco

urt

CW88 Challenge

Build Your OwnTake a number of that is less than 18.Make a model with the .Have a friend estimate and count the .Take turns. Check childrens work.

1. Estimate. ____ cubes 2. Estimate. ____ cubes

Count. ____ cubes Count. ____ cubes

Draw it. Draw it.

3. Estimate. ____ cubes 4. Estimate. ____ cubes

Count. ____ cubes Count. ____ cubes

Draw it. Draw it.

NameLESSON 18.4

H

arco

urt

Challenge CW89

NameLESSON 19.1

From the TopAbout how much taller is the gray pencil than thewhite pencil?

1. 2. 3.

about 2clips taller

about 3clips taller

about 2clips taller

H

arco

urt

CW90 Challenge

NameLESSON 19.2

Long Lines, Short LinesEstimate the length of each line.Then measure its length in inches to check.

Estimate: inches

Check: inches4

Estimate: inches

Check: inches8

Estimate: inches

Check: inches5

Estimate: inches

Check: inches4Estimate: inches

Check: inches6

Estimate: inches

Check: inches2

The longest line is . The shortest line is .

Lines and are about the same length.FE

AD

A

C

D

E

B

F

A.

C.

D.

F.

B.

E.

H

arco

urt

Challenge CW91

NameLESSON 19.3

Feet and Inches Together12 inches make one foot. We can write 13 inches as one foot and one inch.Match the number of inches with the same length in feet and inches.

13 inches

15 inches

16 inches

20 inches

24 inches

25 inches

32 inches

2 feet 1 inch

1foot 4 inches

1foot 1 inch

2 feet 0 inches

2 feet 8 inches

1 foot 3 inches

1 foot 8 inches

1 foot

1 foot

1.

2.

3.

4.

5.

6.

7.

H

arco

urt

CW92 Challenge

NameLESSON 19.4

Know the Ropes!These ropes are the wrong length.Use a centimeter ruler to measure the ropes. Cross out parts that aretoo long. Make the rope longer if it is too short. Tell how many centimeters you added or cut off.

1.

2.

3.

4.

5.

6.

7.

8.

10 centimeters centimeters







12 centimeters centimeters added5

cut off4

cut off2

added6

added4

added2

cut off3

added3

The perimeter is

centimeters.

The perimeter is

centimeters.

The perimeter is

centimeters.

The perimeter is

centimeters.

The perimeter is

centimeters.

The perimeter is

centimeters.

The perimeter is

centimeters.

The perimeter is

centimeters.14

16

12

16

16

16

11

12

H

arco

urt

Challenge CW93

NameLESSON 19.5

Comparing PerimetersUse a centimeter ruler.Find the perimeter of each shape.Then color the one with greater perimeter.

1.

2.

3.

4.

colored

colored

Color bothor neither.

Estimate: about inches

Check: about inches


Check: about inches


Check: about inches


Check: about inches


Check: about inches


Check: about inches8

7

6

6

8

8

H

arco

urt

CW94 Challenge

NameLESSON 19.6

Give an InchEstimate the perimeter of each shape. Check your answer by measuring.

1 inch

1.

3.

5.

1 inch1 inch

2.

4.

6.

1 inch

1 inch

1 inch

H

arco

urt

Challenge CW95

NameLESSON 20.1

H

arco

urt

Liquid MeasureSolve.

1. Terry has 4 cups of milk. 2. Jeremy has 2 quarts of milk.Glen has 1 pint of milk. He drinks 3 pints of it.Who has more milk? How much does he have left?

Terry3. Dale bought 3 pints of 4. Cesar has 6 cups of milk.

milk. Emily bought 4 cups of How many pints can he fill?milk. Who has more milk?

5. Haley has 1 quart of milk. 6. Dustin bought 4 pints of milk. How many cups can she fill? Hannah bought 3 quarts of

milk. Who has more milk?

_____________________ _ _ _ _ _ _ _ _ _ _ _ _ _____________________ 2 cups, or 1 pint

_____________________ _ _ _ _ _ _ _ _ _ _ _ _ _____________________

_____________________ _ _ _ _ _ _ _ _ _ _ _ _ _____________________ 3 pintsDale

_____________________ _ _ _ _ _ _ _ _ _ _ _ _ ____________________

_____________________ _ _ _ _ _ _ _ _ _ _ _ _ _____________________ Hannah4 cups

_____________________ _ _ _ _ _ _ _ _ _ _ _ _ ____________________

H

arco

urt

CW96 Challenge

NameLESSON 20.2

The Water MachineLisa wants to buy water for these containers.Draw a line from the container to about the number of liters of water she should buy.

1.

2.

3.

4.

5.

1 liter

2 liters

8 liters

90 liters

20 liters

H

arco

urt

Challenge CW97

NameLESSON 20.3

H

arco

urt

Balancing ActDraw the shapes needed to make each seesaw balance.

1.

2.

3.

4.

16 ounces = 1 pound

2 ounces 3 ounces 5 ounces 1 pound

H

arco

urt

CW98 Challenge

NameLESSON 20.4

Puzzle TimeFind the word to go in the blank.Write the word in the puzzle.

Across

1. A gram is about the mass of a paper .

2. A mouse would be measured in .

3. A weighs about 1 kilogram.

Down

1. An elephant would be measured in .

2. You can measure weight with a .

3. A kilogram is than a gram.more

scale

kilograms

hammer

grams

clip

K

I PLC

L

O

R

A

M

S

G R A M S

C

A M E RM

O

R

E

H

L

E

1

1

2 2

33

H

arco

urt

Challenge CW99

NameLESSON 20.5

The Weather OutsideColor each thermometer to show the temperature.Then draw a picture to show something you like to do when it is 80F.

10

10

20

30

40

50

60

70

80

90

100

0

Fahrenheit

F

10

10

20

30

40

50

60

70

80

90

100

0

Fahrenheit

F

10

10

20

30

40

50

60

70

80

90

100

0

Fahrenheit

F

59F 32F 86F

Possible drawings may show swimming, playing baseball, sitting

in a hammock, reading a book, etc.

H

arco

urt

CW100 Challenge

What Can You Measure?Work with a friend.Write and draw some things you can measure with each tool.

NameLESSON 20.6

cup ruler balance scale

Possible answers mayinclude: water, milk,

juice

Possible answers mayinclude: desk, book,

table

Possible answers mayinclude: fruit,

vegetables, book

1. 2. 3.

H

arco

urt

Challenge CW101

Hundreds MatchWrite the number. Then write < or >.

1.

2.

3.

4.

5.

200300

600500

400200

500100

200400

NameLESSON 21.1

H

arco

urt

Challenge CW101

>

615524, white

35

410shaded > white

610

712shaded < white

512

H

arco

urt

CW120 Challenge

NameLESSON 24.5

Problem Solving Compare Fractions of FoodDraw a picture to solve the problem.Circle the answer.

1. Sonya made a pizza with 6

equal slices. She put pepperoni

on of the pizza. She put

hamburger on of the pizza.

She put olives on of the

pizza. Which covered the most

slices of her pizzapepperoni,

hamburger, or olives?

2. Henry had 4 muffins. He had

bran muffins. He had corn

muffins. He had blueberry

muffins. Which kind of muffin

did Henry have the most of?

14

24

14

16

36

26

pepperoni

hamburger

olives

bran muffins

corn muffins

blueberry muffins

Check childrens drawings.

H

arco

urt

Challenge CW121

NameLESSON 25.1

200 100

300

398 412

29

707

661

406

16

7240111

10

764

500

998

988

728

650

green

green

green

green

red

1.

red

2.

red

3.

green

4.

green

5.

green

6.

green

498 500

998

207 500

707

261 400

661

106 300

406

312 100

412

198 200

398

Hundreds and MoreWhat is hidden in the picture? Add.Then color the spaces or .Color the leftover spaces .

red

yellow

green

H

arco

urt

CW122 Challenge

NameLESSON 25.2

1.

sunflowers

daisies

3.

lilies

roses

5.

daisies

roses

2.

tulips

lilies

4.

sunflowers

tulips

6.

lilies

sunflowers

How Many Flowers?Use the table. Write the addition problem.

Flowers Planted

tulips 241

roses 105

daisies 426

sunflowers 190

lilies 369

+

190

426

616

+

241

369

610

+

369

105

474

+

190

241

431

+

426

105

531

+

369

190

559

1 11

1 1

1 1

Add 123.

341 464564 687

827 950

H

arco

urt

Challenge CW123

NameLESSON 25.3

3-Digit AdditionAdd.Complete each chart.

Add 256.134 390

523 779

712 968

Add 219.672 891

561 780

450 669

Add 361.136 497

247 608

621 982

1.

2.

3.

4.

Work Space

H

arco

urt

CW124 Challenge

NameLESSON 25.4

Help the Frog Find the PondAdd.Find the spaces in the picture with those sums.Color the spaces to get the frog to the pond.

477 246

723

632 291

923

585 116

701

847 67

914

521 129

650

298 114

412

366 366

732

181 179

360

677 243

920

312 409

721

1.

3.

5.

7.

9.

2.

4.

6.

8.

10.

412

923

732

701

360

914

920650

721300

727

400

200

800169

860

109

320

350

361

171

499

147

723

590

378

911

Start

Finish

11

11

11

11

11

1

11

1 1

brown

brown

brown

brown

brown

brown

brownbrown

brown

brown

H

arco

urt

Challenge CW125

NameLESSON 25.5

Add Dollars and Cents

1. How much does it cost to buythe paint set and the paper?

3. Martha buys the brushes andthe paper. How much does shespend?

5. Joe buys the markers and Nedbuys the paste. How much dothey spend?

2. You buy the brushes and theruler. How much do you spend?

4. How much does it cost to buythe scissors and the crayons?

6. How much do the crayons andthe paint set cost together?

6.112.999.10

5.55

2.99

8.54

3.68

2.49

6.17

6.91

1.69

8.60

5.55

3.55

9.10

1.69

6.11

7.80

$

+

$

$

+

$

$

+

$

$

+

$

$

+

$

$

+

$

Add.

1 11 1

1 11 1

1 1 1

An Adding PatternAdd.If the sum begins with 7, color the box .If the sum begins with 5, color the box .Look for a pattern.

H

arco

urt

CW126 Challenge

NameLESSON 25.6

2. 310 + 394

yellow

310 394

704

1. 477 + 118

red

477+ 118

595

3. $1.76 + $3.76

red

$ 1.76 3.76$ 5.52

5. 199 + 399

red

199 399

598

6. $5.12 + $2.08

yellow

$ 5.12 2.08$ 7.20

4. 210 + 496

yellow

210 496

706

8. $5.25 + $1.98

yellow

$ 5.25 1.98$ 7.23

9. 425 +125

red

425 125

550

7. 110 + 390

red

110 390

500

11. 246 + 324

red

246 324

570

12. 601 + 109

yellow

601 109

710

10. 333 + 392

yellow

333 392

725

1

1 1

111 1

1 1

111

1 1

yellow

red

Y.

B. 625200

425

444 200

244

811 600

211

418 300

118

511 200

311

462 100

362

H

arco

urt

Challenge CW127

NameLESSON 26.1

H

arco

urt

Subtraction SecretSubtract.Use the code to find the answer to the riddle.

What is a ghosts favorite pie?

R. P. E.

O. I.

!!211 244 244 211 118 362 362 206 311 425 118

eipyrreboob

406 200

206

2. 1 16

426119

307

H

arco

urt

CW128 Challenge

NameLESSON 26.2

1. 6 13

273116

157

3. 3 17

547228

319

Y O U

4. 6 11

871223

648

5. 4 13

653419

234

6. 5 11

361138

223

A R E

7. 7 13

883349

534

8. 5 13

863618

245

9. 6 15

975327

648

10. 6 10

670436

234

11. 1 14

524509

15

S M A R T

A648 M245 O307E223 S 534 U319T 15 R 234 Y157

3-Digit CodeSubtract. Then find the difference at the bottom.Write its letter in the box. Read the secret message.

H

arco

urt

Challenge CW129

NameLESSON 26.3

H

arco

urt

Raining HundredsSubtract.How many hundreds are in the difference?Find the color for that many hundreds.Use it to color that part of the picture.Look for a pattern.

0 hundreds 5 hundreds 4 hundreds1 hundred 3 hundreds 2 hundreds

7 hundreds

red red

blue blue

yellow

blue

red

5 17

167139

28

5 10

607262

345

1 12

922407

515

5 10

360121

239

81514

964175

789

6 12

729231

498

3 11

241106

135red blue

yellow

blue bluered red

H

arco

urt

CW130 Challenge

NameLESSON 26.4

3-Digit MessageSubtract.Use the code to find the message.

375 to 400: A 451 to 475: I 526 to 550: M 601 to 625: T401 to 425: D 476 to 500: K 551 to 575: O 626 to 650: U426 to 450: E 501 to 525: L 576 to 600: R 651 to 675: Y

8 15 16

966299

667

6 10 11

711136

575

OY

5 11 11

621152

469

I

7 10 12

812388

424

D

8 9 10

900438

462

I

8 9 12

902287

615

T

8 11 10

920274

646

U

6 9 12

702289

413

D

H

arco

urt

Challenge CW131

NameLESSON 26.5

Whats Missing?Read each problem. Think of the steps necessary to find the answer.What is missing? Write what you need to know to solve each problem.

1. There are 267 brown horses in the stable. There are white horses, too. How many horses are there in all?

I need to know

2. Joe harvested 344 ears of corn on Friday. He also harvested corn on Saturday. How manyears of corn did Joe harvest on both days?

I need to know

3. Joe loaded 522 bales of hay onto the truck onFriday. He also loaded hay on Saturday. How many more bales of hay did Joe load on Fridaythan on Saturday?

I need to know

_____________________ _ _ _ _ _ _ _ _ _ _ _ _ _____________________

__________________________________________ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __________________________________________

the number of white horses.

_____________________ _ _ _ _ _ _ _ _ _ _ _ _ _____________________

__________________________________________ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __________________________________________

how many ears of corn Joe

harvested on Saturday.

_____________________ _ _ _ _ _ _ _ _ _ _ _ _ _____________________

__________________________________________ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __________________________________________

how many bales of hay Joe

loaded on Saturday.

H

arco

urt

CW132 Challenge

NameLESSON 27.1

Lets Go Shopping!Add or subtract.Circle the object or objects that each person buys.There may be more than one possible answer.

1. What did Tom buy? He started with $3.85. He now has $1.35.

$3.00 $2.50 $1.50

2. What did Kelly buy? She started with $5.50. She now has $4.25.

$1.35 $1.15 $1.253. What did Cory buy? He started with $7.80.

He now has $2.90.

$2.40 $2.50 $2.604. What did Natashia buy? She started with $8.22.

She now has $5.75.

$0.57 $1.67 $1.90 $0.80

Note that crayons and clay also equal $2.47.

Answers will vary.Possible answers are given.

$3.85 1.35$2.50

$5.504.25$1.25

$2.40+2.50$4.90

$7.802.90$4.90

$8.225.75$2.47

$1.67+0.80$2.47

4 10

6 18

7 1112 1

H

arco

urt

Challenge CW133

NameLESSON 27.2

Estimating Costs

1. What two things can you buyfor less than $5.00?

jacks

ball

3. How much more does a teddybear cost than a rubber duck?

Estimate Check

$ $

2. How many stuffed elephantscan you buy for $10.00?

elephants

How much change will youget?

$

4. How much does it cost to buythe duck and the balloons?

Estimate Check

$ $ 8.248.00

1.00

2

2.513.00

Estimate. Then add or subtract.

H

arco

urt

CW134 Challenge

NameLESSON 27.3

Adding and Subtracting FishAdd or subtract.Then connect the fish from least to greatest amount.

300187113

700 358

342

632+ 198

830

900 370

530

700 115

585

600 144

456

229+ 386

615

444+ 277

721

438+ 310

748

500 299

201

729+ 171

900

1.

2.

3.

5.6.

7.8.

9.

10.

11.

4.

Begin1with 200.

Begin 1with 100.

Begin 1with 300.

Add 100.

Add 125.

Subtract 200.

Add 425.

Add 300.

Add 212.

Subtract 435.

Add 400.

Add 200.

Add 155.

Subtract 500.

H

arco

urt

Challenge CW135

Problem Solving One Step at a TimeWin points when you go up. Lose points when you go down.Move one step at a time.Show your work below the steps.

Path A

Path B

Path C

On which path do you get the most points? Path A

NameLESSON 27.4

200+100

300

300+125

425425

200225

225+ 425

650

100+ 300

400

400+ 212

612

612 435

177

177+ 400

577

300+ 200

500

500+ 155

655655

500155

Total

650

Total

577

Total

155

H

arco

urt

CW136 Challenge

NameLESSON 28.1

Team PlayersDraw a picture. Solve.

1. A basketball team uses 5 players at a time. How many players can play on 6 basketball teams?

, , , , ,players

2. A hockey team uses 6 players at a time. How many players can play on 6 hockey teams?

, , , , ,players

3. A baseball team uses 9 players at a time. How many players can play on 2 baseball teams?

, , players

4. A football team uses 11 players at a time. How many players can play on 4 football teams?

, , , players4444332211

18189

3636302418126

3030252015105

X XX

X X

X X XX X XX X X

X X X XX X X

X X X X

X X X XX X X

X X X X

X X X XX X X

X X X X

X X X XX X X

X X X X

X X XX X XX X X

X XX

X X

X XX

X X

X XX

X X

X XX

X X

X XX

X X

X X XX X X

X X XX X X

X X XX X X

X X XX X X

X X XX X X

X X XX X X


H

arco

urt

Challenge CW137

NameLESSON 28.2

Two WaysWrite the sum.Then write the product.

1. 5 + 5 + 5 + 5 + 5 + 5 = 6 5 =

2. 10 + 10 + 10 + 10 = =

3. 3 + 3 + 3 + 3 + 3 = =

4. 4 + 4 + 4 + 4 = =

5. 6 + 6 + 6 = = 186318

164416

153515

4010440

3030

H

arco

urt

CW138 Challenge

NameLESSON 28.3

Making ArraysDraw circles. Draw 3 different arrays for each number.Write how many rows and how many in each row. Write the multiplication sentence.

1. 12

rows rows rows

in each row in each row in each row

2. 20

rows rows rows

in each row in each row in each row

2 6 = 1262

Answers may vary.Possible answers:

4 rows of 3, 3 rows of 4, 6 rows of 2,2 rows of 6,12 rows of 1,1 row of 12

Possible answers: 20 rows of 110 rows of 25 rows of 44 rows of 52 rows of 10 1 row of 20

+

H

arco

urt

Related Multiplication FactsClimb the steps.

Write the product. Use the related multiplication fact in the toy box to help you.

7 8 =

9 6 =

6 8 =

5 9 =

7 6 =

4 9 =

8 4 = 32

36

42

45

48

54

56

NameLESSON 28.4

6 9 = 54

9 5 = 45

9 4 = 36

8 6 = 48

6 7 = 42

4 8 = 32

8 7 = 56

Challenge CW139

H

arco

urt

CW140 Challenge

Find the X-itIf the multiplication is true, color the box red .

If the multiplication is false, color the box blue .

NameLESSON 28.5

3 5

15

6 4

26

9 3

18

5 6

30

3 9

28

5 8

32

5 3

12

8 5

40

4 7

14

6 5

40

4 9

32

7 3

21

8 2

10

9 4

34

5 5

25

6 6

30

10 7

70

2 8

4

5 5

35

6 6

42

35 = 16 49 = 36

64 = 24 46 = 28

39 = 27

55 = 20

74 = 24 47 = 28 107 = 35 710 = 75

65 = 35 82 = 16

58 = 30 66 = 36

37 = 20 73 = 24

R B B B B R

B R B B R B

B B R R B B

B B R R B B

B R B B R B

R B B B B R

The red squares form an X.

red

blue

H

arco

urt

Challenge CW141

NameLESSON 29.1

H

arco

urt

Draw to MultiplyUse counters to show equal groups. Draw them.Then solve the problem.

1. Draw 10 counters. How many equal groups of 2 are there?

2 = 10


2 = 16


2 = 20


2 = 147

10

8

5


H

arco

urt

CW142 Challenge

NameLESSON 29.2

Groups of 5Draw to help you solve the problem.Complete the multiplication sentence.

1. Jon has 5 equal baskets of apples. He has 40 apples in all. How many apples are in each basket?

5 = 40 in each basket

2. Sally has 5 equal bunches of bananas. She has 25 bananas in all. How many bananas are in each bunch?

5 = 25 in each bunch

3. Sean has 5 equal cartons of strawberries. He has 50 strawberries in all. How many strawberries are in each carton?

5 = 50 in each carton

4. Brenda has 5 equal bags of oranges. She has 35 oranges in all. How many oranges are in each bag?

5 = 35 in each bag77

1010

55

88


H

arco

urt

Challenge CW143

NameLESSON 29.3

Multiply with 10Fill in the blank.

1. 2.

10 = 80 10 = 60

3. 4.

7 = 70 10 = 100

5. 6.

4 = 40 10 = 30

7. 8.

10 = 20 10 = 50

9. 10.

9 = 90 10 = 10

11. 12.

10 = 70 10 = 9097

110

52

310

1010

68

H

arco

urt

CW144 Challenge

NameLESSON 29.4

Number RollUse a number cube.The first roll will show how many groups.The second roll will show how many are in each group.Write the multiplication sentence.Draw a picture to solve the problem.

1.

=

2.

=

3.

=

4.

=

5.

=

623


Problems will vary.Answers will vary.A sample answer is given.

H

arco

urt

Challenge CW145

Draw Equal SharesDraw circles to make equal groups.

1. Divide 11 circles into equal groups.

____ circles in each group

____ left over



____ left over



____ left over

NameLESSON 30.1

Answers will vary.Check childrens drawings.

Find Equal GroupsRead each problem. How many ways can you make two or moreequal groups without leftovers?

1. 15 apples

groups of

groups of

2. 16 bananas

groups of

groups of

groups of

3. 18 pears

groups of

groups of

groups of

groups of

4. 20 oranges

groups of

groups of

groups of

groups of 45

54

210

102

36

63

29

92

44

28

82

3553

H

arco

urt

CW146 Challenge

NameLESSON 30.2

H

arco

urt

Challenge CW147

Divide to SolveSolve. Draw pictures if you need to.

1. There are 24 desks in Miss Kellersroom. There are 6 desks in each row.How many rows are there?

rows

2. 3 students borrowed 18 books fromthe library. Each student borrowed thesame number of books. How manybooks did each student borrow?

books

3. The teacher handed out 22 balloons atthe class party. She gave an equalnumber to each of 11 students. Howmany balloons did each student get?

balloons

4. Miss Simpson divided the classinto 3 equal reading groups. There are21 children in the class. How manychildren are in each reading group?

children7

2

6

4

NameLESSON 30.3

H

arco

urt

CW148 Challenge

Problem Solving Write the Number SentenceWrite the number sentence. Solve.

1. Sharon mows 5 yards each dayfor a week. How many yardsdoes she mow in all?

2. Luis picks 15 apples from histree. He divides them equallyamong his 3 children. How manyapples does each child get?

3. Rita has 10 hens. Each hen lays6 eggs every week. How manyeggs do the hens lay in oneweek?

4. There are 32 radishes in Jimsgarden. Each day he eats 4radishes. How many days will ittake to eat all of the radishes?

NameLESSON 30.4

=

yards

=

apples

=

eggs

=

days8

8432

60

60610

5

5315

Documents

Harcourt Math Challenge Workbook Grade 2 Teachers Edition