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Addition and Subtraction to 40

CHAPTER

13Worksheet 1 Addition Without RegroupingComplete the number bonds.Then add.

1. 9 + 5 = 2. 6 + 7 =

1

3. 12 + 2 = 4. 15 + 4 =

10

Find the related addition facts.

5. 7 – 3 = 4 + =

6. 13 – 8 = 5 + =

7. 15 – 6 = 9 + =

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Chapter 13 Lesson 152

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Add by counting on.

ExampleFind 24 + 4.

24 25 2726 28

24, , , ,

24 + 4 =

Count on from the greater number.

8. Find 20 + 5. 20 21 2322 24 25

20, , , , ,

20 + 5 =

9. Find 31 + 6. 31 32 3433 35 36 37

31, , , , , ,

31 + 6 =

10. Find 32 + 7. 32 33 3534 36 37 38 39

32, , , , , , ,

32 + 7 =

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Complete each place-value chart.Then add.

Example

Tens Ones 2 7+ 2

place-value chart

27

2

Tens OnesFind 27 + 2.

Step 1 Add the ones.7 + 2 = 9

Step 2 Add the tens.20 + 0 = 20

So, 27 + 2 = .

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Chapter 13 Lesson 154

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11. Find 21 + 4.

21

4

Tens Ones

Tens Ones 2 1+ 4

Step 1 Add the ones.1 + 4 =

Step 2 Add the tens.20 + 0 =

So, 21 + 4 = .

12. Find 23 + 3.

23

3

Tens Ones

Tens Ones 2 3+ 3

Step 1 Add the ones.3 + 3 =

Step 2 Add the tens.20 + 0 =

So, 23 + 3 = .

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13. Find 33 + 5.

33

5

Tens Ones

Tens Ones 3 3+ 5

Step 1 Add the ones. + =

Step 2 Add the tens. + =

So, 33 + 5 = .

14. Find 31 + 8.

31

8

Tens Ones

Tens Ones 3 1+ 8

Step 1 Add the ones. + =

Step 2 Add the tens. + =

So, 31 + 8 = .

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Chapter 13 Lesson 156

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Add.

Example

Tens Ones 3 0+ 7

Step 1 0 + 7 =

Step 2 30 + 0 =

So, 30 + 7 = .

15. Tens Ones 2 5+ 4

16. Tens Ones 3 2+ 3

17. 2 3+ 2

18. 3 7+ 1

Step 1 5 + 4 =

Step 2 20 + 0 =

So, 25 + 4 = .

Step 1 + =

Step 2 + =

So, 32 + 3 = .

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Complete each place-value chart.Then add.

Example

Tens Ones 2 3+ 1 1

23

11

Tens Ones

Step 1 Add the ones.3 + 1 = 4

Step 2 Add the tens.20 + 10 = 30

So, 23 + 11 = .

Find 23 + 11.

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Chapter 13 Lesson 1

19. Find 15 + 24.

15

24

Tens Ones

Tens Ones 1 5+ 2 4

Step 1 Add the ones.5 + 4 =

Step 2 Add the tens.10 + 20 =

So, 15 + 24 = .

20. Find 13 + 21.

13

21

Tens Ones

Tens Ones 1 3+ 2 1

Step 1 Add the ones.3 + 1 =

Step 2 Add the tens.10 + 20 =

So, 13 + 21 = .

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21. Find 30 + 10.

30

10

Tens Ones

Tens Ones 3 0+ 1 0

Step 1 Add the ones. + =

Step 2 Add the tens. + =

So, 30 + 10 = .

22. Find 20 + 17.

20

17

Tens Ones

Tens Ones 2 0+ 1 7

Step 1 Add the ones. + =

Step 2 Add the tens. + =

So, 20 + 17 = .

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Chapter 13 Lesson 1

Add.

Example

Tens Ones 2 6+ 1 2

Step 1 6 + 2 =

Step 2 20 + 10 =

So, 26 + 12 = .

23. Tens Ones 1 9+ 2 0

24. Tens Ones 2 2+ 1 4

25. 1 5+ 1 2

26. 2 1+ 1 6

Step 1 9 + 0 =

Step 2 10 + 20 =

So, 19 + 20 = .

Step 1 + =

Step 2 + =

So, + = .

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Worksheet 2 Addition with RegroupingRegroup the ones into tens and ones.Then complete the place-value chart.

Example

Tens Ones

15 =

Tens Ones

Regroup means to change 10 ones for 1 ten.

1. Tens Ones

18 =

Tens Ones

2. Tens Ones

21 =

Tens Ones

2

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Chapter 13 Lesson 2

3. Tens Ones

25 =

Tens Ones

Complete each place-value chart.Then add.

Example

Tens Ones

1 4+ 7

14

7

Tens OnesFind 14 + 7.

1

Step 1 Add the ones.4 + 7 = 11

Regroup the ones.11 ones = 1 ten 1 one

Step 2 Add the tens.10 + 10 + 0 = 20

So, 14 + 7 = .

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4. Find 19 + 5.

Tens Ones 1 9+ 5

Step 1 Add the ones.9 + 5 =

Regroup the ones. ones = 1 ten 4 ones

Step 2 Add the tens.10 + 10 + 0 =

So, 19 + 5 = .

5. Find 26 + 8.

Tens Ones 2 6+ 8

19

5

Tens Ones

26

8

Tens Ones

Step 1 Add the ones. + =

Regroup the ones. ones = ten

ones

Step 2 Add the tens. + + =

So, 26 + 8 = .

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Chapter 13 Lesson 2

Add.

Example

Step 1 9 + 3 =

Regroup the ones. 12 ones = 1 ten 2 ones

Step 2 10 + 20 + 0 =

So, 29 + 3 = .

Tens Ones

2 9+ 3

1

6. Tens Ones 3 3+ 7

Step 1 3 + 7 =

Regroup the ones. ones = 1 ten 0 ones

Step 2 10 + 30 + 0 =

So, 33 + 7 = .

7. Tens Ones 2 7+ 4

Step 1 7 + 4 =

Regroup the ones. ones = ten

one

Step 2 + + =

So, 27 + 4 = .

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8. 1 7 9. 1 6 + 3 + 8

Complete each place-value chart.Then add.

Example

Tens Ones

1 5+ 1 5

15

15

Tens OnesFind 15 + 15.

Step 1 Add the ones.5 + 5 = 10.

Regroup the ones. 10 ones = 1 ten 0 ones

Step 2 Add the tens.10 + 10 + 10 = 30

So, 15 + 15 = .

1

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Chapter 13 Lesson 2

10. Find 12 + 19.

Tens Ones 1 2+ 1 9

Step 1 Add the ones.2 + 9 = .

Regroup the ones. ones = 1 ten 1 one

Step 2 Add the tens.10 + 10 + 10 =

So, 12 + 19 = .

11. Find 16 + 18.

Tens Ones 1 6+ 1 8

Step 1 Add the ones. + = .

Regroup the ones. ones = ten ones

Step 2 Add the tens. + + =

So, 16 + 18 = .

12

19

Tens Ones

16

18

Tens Ones

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Add.

Example

Step 1 4 + 9 =

Regroup the ones. 13 ones = 1 ten 3 ones

Step 2 10 + 10 + 10 =

So, 14 + 19 = .

Tens Ones

1 4+ 1 9

1

12. Tens Ones 2 7+ 1 3

Step 1 7 + 3 =

Regroup the ones. ones = 1 ten 0 ones

Step 2 10 + 20 + 10 =

So, 27 + 13 = .

13. Tens Ones 1 7+ 1 5

Step 1 + =

Regroup the ones. ones = ten

ones

Step 2 + + =

So, 17 + 15 = .

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Chapter 13 Lesson 2

14. Tens Ones 1 9+ 1 3

15. Tens Ones 1 2+ 2 8

16. 1 6+ 1 5

17. 1 4+ 1 8

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Worksheet 3 Subtraction Without Regrouping

Complete the number bonds.Then subtract.

1. 19 – 7 = 2. 18 – 4 =

10

3. 11 – 5 = 4. 13 – 6 =

10

Find the related subtraction facts.

5. 4 + 6 = 10 – =

6. 9 + 8 = 17 – =

7. 5 + 9 = 14 – =

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Chapter 13 Lesson 3

Subtract by counting back.

ExampleFind 28 – 6.

22 23 25 2724 26 28

28, , , , , ,

28 – 6 =

Count back from the greater number.

8. Find 25 – 4. 21 22 2423 25

25, , , ,

25 – 4 =

9. Find 34 – 2. 32 33 34

34, ,

34 – 2 =

10. Find 38 – 5. 33 34 3635 37 38

38, , , , ,

38 – 5 =

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Complete each place-value chart.Then subtract.

Example

Tens Ones 1 9– 7

19

Tens Ones

Find 19 – 7.

Step 1 Subtract the ones.9 – 7 = 2

Step 2 Subtract the tens.10 – 0 = 10

So, 19 – 7 = .

11. Find 24 – 4.

Tens Ones 2 4– 4

Step 1 Subtract the ones.4 – 4 =

Step 2 Subtract the tens.20 – 0 =

So, 24 – 4 = .

24

Tens Ones

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Chapter 13 Lesson 3

12. Find 28 – 5.

Tens Ones 2 8– 5

28

Tens Ones

Step 1 Subtract the ones.

8 – 5 =

Step 2 Subtract the tens.20 – 0 =

So, 28 – 5 = .

13. Find 36 – 3.

Tens Ones 3 6– 3

36

Tens Ones

Step 1 Subtract the ones. – =

Step 2 Subtract the tens. – =

So, 36 – 3 = .

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Subtract.

Example

Tens Ones 3 5– 5

Step 1 5 – 5 =

Step 2 30 – 0 =

So, 35 – 5 = .

14. Step 1 9 – 8 =

Step 2 20 – 0 =

So, 29 – 8 = .

Tens Ones 2 9– 8

15. Step 1 – =

Step 2 – =

So, 37 – 4 = .

Tens Ones 3 7– 4

16. Tens Ones 3 9– 6

17. Tens Ones 2 7– 3

18. 2 5– 5

19. 3 6– 4

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Chapter 13 Lesson 3

Complete each place-value chart.Then subtract.

Find 25 – 13.Example

Tens Ones 2 5– 1 3 25

Tens Ones

Step 1 Subtract the ones.5 – 3 = 2

Step 2 Subtract the tens.20 – 10 = 10

So, 25 – 13 = .

20. Find 29 – 14.

Tens Ones Tens Ones 2 9– 1 4

29

Step 1 Subtract the ones.9 – 4 =

Step 2 Subtract the tens.20 – 10 =

So, 29 – 14 = .

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21. Find 37 – 16.

Tens Ones Tens Ones 3 7– 1 6

37

Step 1 Subtract the ones.7 – 6 =

Step 2 Subtract the tens.30 – 10 =

So, 37 – 16 = .

22. Find 32 – 20.

Tens Ones Tens Ones

3 2– 2 0

32

Step 1 Subtract the ones. – =

Step 2 Subtract the tens. – =

So, 32 – 20 = .

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Chapter 13 Lesson 3

Subtract.

Example

Tens Ones 3 8– 1 4

Step 1 8 – 4 =

Step 2 30 – 10 =

So, 38 – 14 = .

23. Step 1 4 – 0 =

Step 2 20 – 10 =

So, 24 – 10 = .

Tens Ones 2 4– 1 0

24. Step 1 – =

Step 2 – =

So, 36 – 23 = .

Tens Ones 3 6– 2 3

25. Tens Ones 3 4– 2 1

26. Tens Ones 2 8– 1 6

27. 4 0– 2 0

28. 3 5– 1 2

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Worksheet 4 Subtraction with RegroupingRegroup the tens into tens and ones.Then complete the place-value chart.

Example

Tens Ones

1 9 =

Tens Ones

1. Tens Ones

2 4 =

Tens Ones

1

2. Tens Ones

3 3 =

Tens Ones

2

3. Tens Ones

3 7 =

Tens Ones

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Chapter 13 Lesson 4

Subtract.Use the place-value chart to help you.

Step 1 Subtract the ones.

Regroup the tens and ones in 35.35 = 3 tens 5 ones

= 2 tens 15 ones 15 – 6 = 9

Step 2 Subtract the tens.20 – 10 = 10

So, 35 – 16 = .

Find 35 – 16.

35

Example

Tens Ones

3 15– 1 6

2 Tens Ones

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4. Find 34 – 18.

Tens Ones

3 14– 1 8

2

Step 1 Subtract the ones.

Regroup the tens and ones in 34.34 = 3 tens 4 ones

= 2 tens 14 ones 14 – 8 =

Step 2 Subtract the tens.20 – 10 =

So, 34 – 18 = .

Tens Ones

34

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Chapter 13 Lesson 4

5.

Find 23 – 17.

Tens Ones 2 3– 1 7

Step 1 Subtract the ones.

Regroup the tens and ones in 23.23 = 2 tens 3 ones

= 1 ten 13 ones

13 – 7 =

Step 2 Subtract the tens.10 – 10 =

So, 23 – 17 = .

Tens Ones

23

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6. Tens Ones 3 6– 1 7

Step 1 Subtract the ones.

Regroup the tens and ones in 36. 3 tens 6 ones = 2 tens

ones – =

Step 2 Subtract the tens. – =

So, 36 – 17 = .

Regroup and subtract.

Tens Ones

2 13– 8

1

Example

23

320

23

10

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Chapter 13 Lesson 4

7. Tens Ones 2 6– 9

26

20

26

10

8. Tens Ones 3 4– 7

34 34

Subtract.

9. Tens Ones

2 1– 5

1 1

10. Tens Ones 2 5– 8

11. 3 0– 4

12. 3 3– 6

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e ii.

Regroup and subtract.

Example Tens Ones 2 6– 1 8

26

620

26

10

13. Tens Ones 2 2– 1 7

22

20

22

10

14. Tens Ones 3 1– 1 3

31

30

31

20

15. Tens Ones 3 5– 2 9

35 35

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Chapter 13 Lesson 4

Subtract.

16. 2 4– 1 5

17. 2 7– 1 9

18. 3 3– 1 4

19. 4 0– 2 1

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Worksheet 5 Adding Three NumbersComplete the number bonds.Make ten.Then add.

Example

5 + 7 + 4 =

5 + = 10

+ 4 = 6

+ = 16

So, 5 + 7 + 4 = .

1. 8 + 9 + 3 =

8 + = 10

+ 3 = 10

+ = 20

So, 8 + 9 + 3 = .

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Chapter 13 Lesson 5

2. 7 + 5 + 2 =

7 + = 10

+ 2 = 4

+ = 14

So, + + = .

3. 6 + 8 + 4 =

8 + = 10

6 + = 8

+ =

So, + + = .

Add.

4. 9 + 2 + 5 = 5. 4 + 8 + 9 =

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Worksheet 6 Real-World Problems:Addition and Subtraction

Solve.

1. Paulo used 11 shapes to make a picture.Ryan used 5 more shapes than Paulo to make his picture.How many shapes did Ryan use to make his picture?

Ryan used shapes to make his picture.

2. Leah bakes 15 muffi ns.Anna bakes 3 fewer muffi ns than Leah.How many muffi ns does Anna bake?

Anna bakes muffi ns.

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Chapter 13 Lesson 6

3. Maggie read 24 books last month.She read 7 more books than her brother.How many books did her brother read last month?

Her brother read books last month.

4. Brad caught 27 spiders.Alexis caught 9 more spiders than Brad.How many spiders did Alexis catch?

Alexis caught spiders.

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5. Jennifer buys 21 stamps from the post offi ce.Susan buys 14 more stamps than Jennifer.How many stamps does Susan buy?

Susan buys stamps.

6. Mr. Rogers had 28 caps in his shop.He sold 15 of them.How many caps did Mr. Rogers have left?

Mr. Rogers had caps left.

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Chapter 13 Lesson 6

7. Ling makes 19 friendship bracelets.She makes 11 fewer friendship bracelets than Karen.How many friendship bracelets does Karen make?

Karen makes friendship bracelets.

8. Tim has 33 pencils.Alan has 18 fewer pencils than Tim.How many pencils does Alan have?

Alan has pencils.

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