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Teaching 2-Step Word Problems SMARTTraining NOW 10221 North 32 nd Street Suite A Phoenix, Arizona 85028 p: 602.570.1942 f: 602.926.8363 www.SingaporeMathTraining.com Presented by: Peggy Golden / Linda West July 2015 [email protected] Scottsdale, Arizona

Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

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Page 1: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

Teaching 2-Step Word Problems

SMARTTraining NOW

10221 North 32nd Street Suite A Phoenix, Arizona 85028

p: 602.570.1942 f: 602.926.8363

www.SingaporeMathTraining.com

Presented by: Peggy Golden / Linda West July 2015 [email protected] Scottsdale, Arizona

Page 2: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

1

2-Step Word Problems Grades 2 – 5

All problems are found in Engage NY’s Math Modules. G2, M2 1. Mr. Peterson decorated with 15 meters of ribbon in the morning. He decorated

with 8 more meters in the afternoon than in the morning. How many meters of ribbon did Mr. Peterson use to decorate in the morning and afternoon in all?

2. The red colored pencil is 17 centimeters long. The green colored pencil is 9 centimeters shorter than the red colored pencil. What is the total length of both pencils?

3. Maura's ribbon is 26 cm long. Colleen's ribbon is 14 cm shorter than Maura's ribbon. What is the total length of both the ribbons?

4. Jesse’s doll is 30 cm tall. Sarah’s doll is 9 cm shorter than Jessie’s doll. What is the total length of both dolls?

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2

5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather strip that is 16 centimeters long. What is the total length of both strips?

G2, M4

6. There are 31 students on the red bus. There are 29 more students on the yellow bus than on the red bus. How many students are on the yellow bus? How many students are on both buses combined?

7. Ms. Lopez cut 46 cm of yarn. Ms. Hamilton cut 22 cm less than Ms. Lopez. How

many centimeters of yarn did Ms. Hamilton cut? How many centimeters of yarn did they have altogether?

Page 4: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

3

8. Kiera has 62 blocks and Pete has 37 blocks. They give away 75 blocks. How many blocks do they have left?

9. Ian bought a pack of 47 water balloons. 19 were red, 16 were yellow, and the

rest were blue. How many water balloons were blue?

10. Kevin had 53 balloons. His cat popped 17 of them. His father gives him 18 more balloons. How many balloons does Kevin have now?

11. Lee’s fish tank has 24 goldfish and some silver fish. In all, there are 59 fish in the aquarium. Lee puts in some more silver fish. Now, there are 51 silver fish.How many silver fish did Lee put in the tank?

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4

12. There were 35 apples on the table. 17 of the apples were rotten and were thrown out. 9 apples were eaten. How many apples are still on the table?

13. There are 32 brown dogs and 19 white dogs at the park. 16 more brown dogs come to the park. How many dogs are there now at the park?

14. Antonio gave 27 tomatoes to his neighbor and 15 to his brother. He had 72

tomatoes before giving some away. How many tomatoes does Antonio have left?

15. The bakery made 92 muffins. Seventeen were blueberry, 23 were cranberry, and

the rest were chocolate chip. How many chocolate chip muffins did the bakery make?

Page 6: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

5

G3, M1

16. Red, orange, and blue scarves are on sale for $4 each. Nina buys 2 scarves of each color. She also buys a hat that costs $4. How much does she spend altogether?

17. Mr. Lim buys 7 plants for his garden. Each plant costs $5. The next day, he buys a rose bush that also costs $5. How much more do the 7 plants cost than the rose bush?

18. Ten children equally share 40 almonds. How many almonds will 3 children get?

19. There are 25 blue balloons and 15 red balloons at a party. Five children are given an equal number of each color balloon. How many blue and red balloons does each child get?

Page 7: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

6

G3, M3

20. Rose has 6 pieces of yarn that are each 9 centimeters long. Sasha gives Rose a piece of yarn. Now, Rose has a total of 81 centimeters of yarn. What is the length of the yarn that Sasha gives Rose?

21. Julio spends 29 minutes doing his spelling homework. He then completes each math problem in 4 minutes. There are 7 math problems. How many minutes does Julio spend on his homework in all?

22. Tanner’s beaker had 45 milliliters of water in it at first. After each of his friends poured in 8 milliliters, the beaker contained 93 milliliters. How many friends poured water into Tanner’s beaker?

23. On Saturday, Warren swims laps in the pool for 45 minutes. On Sunday, he runs 8 miles. It takes him 9 minutes to run each mile. How long does Warren spend exercising over the weekend?

Page 8: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

7

G4, M1

24. Last year, Big Bill’s Department Store sold many pairs of footwear. 118,214 pairs of boots were sold, 37,092 more pairs of sandals than pairs of boots were sold, and 124,417 more pairs of sneakers than pairs of boots were sold. How many pairs of footwear were sold last year?

25. On Saturday, 32,736 more bus tickets were sold than on Sunday. On Sunday, only 17,295 tickets were sold. How many people bought bus tickets over the weekend?

26. In January, Scott earned $8,999. In February, he earned $2,387 more than in January. In March, Scott earned the same amount as in February. How much did Scott earn altogether during those three months?

27. A company has 3 locations with 70,010 employees altogether. The first location has 34,857 employees. The second location has 17,595 employees. How many employees work in the third location?

Page 9: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

8

28. There were 12,345 people at a concert on Saturday night. On Sunday night, there were 1,795 fewer people at the concert than on Saturday night. How many people attended the concert on both nights?

29. Martin’s car had 86,456 miles on it. Of that distance, Martin’s wife drove 24,901 miles, and his son drove 7,997 miles. Martin drove the rest.

30. A pair of hippos weighed 5,201 kilograms together. The female weighed 2,038 kilograms. How much more did the male weigh than the female?

31. At a parade, 97,853 people sat in bleachers and 388,547 people stood along the street. How many fewer people were in the bleachers than standing on the street?

Page 10: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

9

32. The shop sold 12,789 chocolate and 9,324 cookie dough cones. It sold 1,078 more peanut butter cones than cookie dough cones and 999 more vanilla cones than chocolate cones. What was the total number of ice cream cones sold?

G4, M2

33. The gas tank in Zachary’s car has a capacity of 60 liters. He adds 23 liters 825 milliliters gas to the tank, which already has 2,050 milliliters of gas. How much more gas can Zachary add to the gas tank?

34. Jeff places a pineapple with a mass of 890 grams on a balance scale. He balances the scale by placing two oranges, an apple, and a lemon on the other side. Each orange weighs 280 grams. The lemon weighs 195 grams less than each orange. What is the mass of the apple?

Page 11: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

10

G4, M3

35. The rectangular projection screen in the school auditorium is 5 times as long and 5 times as wide as the rectangular screen in the library. The screen in the library is 4 feet long with a perimeter of 14 feet. What is the perimeter of the screen in the auditorium?

36. The width of David’s rectangular tent is 5 feet. The length is twice the width. David’s rectangular air mattress measures 3 feet by 6 feet. If David puts the air mattress in the tent, how many square feet of floor space will be available for the rest of his things?

37. The Turner family uses 548 liters of water per day. The Hill family uses 3 times as much water per day. How much water does the Hill family use per week?

G4, M5

38. A seamstress needs 15

8 yards of fabric to make a child’s dress. She needs 3 times

as much fabric to make a woman’s dress. How many yards of fabric does she need for both dresses?

Page 12: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

11

39. A piece of blue yarn is 52

3 yards long. A piece of pink yarn is 5 times as long as

the blue yarn. Bailey tied them together with a knot that used 1

3 yard from each

piece of yarn. What is the total length of the yarn tied together?

40. A truck driver drove 352

10 miles before he stopped for breakfast. He then drove 5

times as far before he stopped for lunch. How far did he drive that day before his lunch break?

41. Jeff has ten packages that he wants to mail. Nine identical packages weigh 27

8

pounds each. A tenth package weighs two times as much as one of the other packages. How many pounds do all ten packages weigh?

G4, M6

42. Barrel A contains 2.7 liters of water. Barrel B contains 3.09 liters of water. Together, how much water do the two barrels contain?

Page 13: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

12

43. A team of three ran a relay race. The final runner’s time was the fastest, measuring 2 .2 seconds. The middle runner’s time was 1.8 seconds slower than the final runner’s. The starting runner’s time was 0.9 seconds slower than the middle runner’s. What was the team’s total time for the race?

44. Vanessa has 6 dimes and 2 pennies. Joachim has 1 dollar, 3 dimes, and 5 pennies. Jimmy has 5 dollars and 7 pennies. They want to put their money together to buy a game that costs $8.00. Do they have enough money to buy the game? If not, how much more money do they need?

G4, M7

45. A girl’s height is feet. A giraffe’s height is times that of the girl. How many inches taller is the giraffe than the girl?

46. Twenty servings of pancakes require 15 ounces of pancake mix. a. How much pancake mix is needed for 120 servings? The mix is bought in pound bags. How many bags will be needed to make 120 servings?

Page 14: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

13

G5, M4

47. Kim and Courtney share a 16-ounce box of cereal. By the end of the week, Kim

has eaten 3

8 of the box, and Courtney has eaten

1

4 of the box of cereal. What

fraction of the box is left?

48. Mathilde has 20 pints of green paint. She uses 2

5 of it to paint a landscape and

3

10

of it while painting a clover. She decides that for her next painting she will need 14 pints of green paint. How much more paint will she need to buy?

49. Mrs. Diaz makes 5 dozen cookies for her class. One-ninth of her 27 students are absent the day she brings the cookies. If she shares the cookies equally among the students who are present, how many cookies will each student get?

50. A baseball team played 32 games and lost 8. Katy was the catcher in 5

8 of the

winning games and 1

4 of the losing games. What fraction of the games did the

team win? In how many games did Katy play catcher?

51. Three-fifths of the students in a room are girls. One-third of the girls have blond hair. One-half of the boys have brown hair. What fraction of all the students are girls with blond hair? What fraction of all the students are boys without brown hair?

52. Cody and Sam mowed the yard on Saturday. Dad told Cody to mow 1

4 of the yard.

He told Sam to mow 1

3 of the remainder of the yard. Dad paid each of the boys an

equal amount. Sam said, “Dad, that’s not fair! I had to mow one-third and Cody only mowed one-fourth!” Explain to Sam the error in his thinking.Draw a picture to support your reasoning.

53. Joakim is icing 30 cupcakes. He spreads mint icing on 1

5 of the cupcakes and

chocolate on 1

2 of the remaining cupcakes. The rest will get vanilla icing. How

many cupcakes have vanilla icing?

54. Three-quarters of the boats in the marina are white, 4

7 of the remaining boats are

blue, and the rest are red. If there are 9 red boats, how many boats are in the marina?

Page 15: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

Mat

hem

atic

s G

loss

ary

» T

able

1

PR

INT

TH

IS P

AG

E

Co

mm

on

ad

dit

ion

an

d s

ub

trac

tio

n.

RE

SULT

UN

KN

OW

NC

HA

NG

E U

NK

NO

WN

STA

RT

UN

KN

OW

N

AD

D T

O

Tw

o b

un

nie

s sa

t o

n t

he

gras

s. T

hre

e

mo

re b

un

nie

s h

opp

ed t

her

e. H

ow

man

y

bu

nn

ies

are

on

th

e gr

ass

no

w? 

2 +

3 =

?

Tw

o b

un

nie

s w

ere

sitt

ing

on

th

e gr

ass.

Som

e m

ore

bu

nn

ies

ho

pped

th

ere.

Th

en t

her

e w

ere

five

bu

nn

ies.

Ho

w

man

y b

un

nie

s h

opp

ed o

ver

to t

he

firs

t

two

? 2

+ ?

= 5

Som

e b

un

nie

s w

ere

sitt

ing

on

th

e gr

ass.

Th

ree

mo

re b

un

nie

s h

opp

ed t

her

e.

Th

en t

her

e w

ere

five

bu

nn

ies.

Ho

w

man

y b

un

nie

s w

ere

on

th

e gr

ass

bef

ore

? ?

+ 3

=5

TA

KE

FR

OM

Fiv

e ap

ples

wer

e o

n t

he

tab

le. I

ate

tw

o

appl

es. H

ow

man

y ap

ples

are

on

th

e

tab

le n

ow

?5-2

= ?

Fiv

e ap

ples

wer

e o

n t

he

tab

le. I

ate

som

e ap

ples

. Th

en t

her

e w

ere

thre

e

appl

es. H

ow

man

y ap

ples

did

I ea

t?5

– ?

= 3

Som

e ap

ples

wer

e o

n t

he

tab

le. I

ate

two

app

les.

Th

en t

her

e w

ere

thre

e

appl

es. H

ow

man

y ap

ples

wer

e o

n t

he

tab

le b

efo

re??

-2 =

3

TO

TA

L U

NK

NO

WN

AD

DE

ND

UN

KN

OW

NB

OT

H A

DD

EN

DS

UN

KN

OW

N

PU

T T

OG

ET

HE

R /

TA

KE

AP

AR

T

Th

ree

red

app

les

and

tw

o g

reen

app

les

are

on

th

e ta

ble

. Ho

w m

any

appl

es a

re

on

th

e ta

ble

? 3

+ 2

= ?

Fiv

e ap

ples

are

on

th

e ta

ble

. Th

ree

are

red

an

d t

he

rest

are

gre

en. H

ow

man

y

appl

es a

re g

reen

? 3

+ ?

= 5

, 5-3

= ?

Gra

nd

ma

has

five

flo

wer

s. H

ow

man

y

can

sh

e pu

t in

th

e re

d v

ase

and

ho

w

man

y in

her

blu

e va

se? 

5 =

0 +

5, 5

+ 0

5

= 1

+4

,  5 =

4 +

1 5

= 2

+ 3

, 5 =

3 +

2

CO

MP

AR

ED

IFF

ER

EN

CE

UK

NO

WN

BIG

GE

R U

NK

NO

WN

SMA

LLE

R U

NK

NO

WN

(“H

ow

man

y m

ore

?” v

ersi

on

):Lu

cy h

as

two

app

les.

Ju

lie h

as fi

ve a

pple

s. H

ow

man

y m

ore

app

les

do

es J

ulie

hav

e th

an

Lucy

?(“H

ow

man

y fe

wer

?”

vers

ion

): Lu

cy h

as t

wo

app

les.

Ju

lie h

as

five

app

les.

Ho

w m

any

few

er a

pple

s

do

es L

ucy

hav

e th

en J

ulie

? 2

+ ?

= 5

, 5 –

2 =

?

(Ver

sio

n w

ith

“mo

re”)

: Ju

lie h

as t

hre

e

mo

re a

pple

s th

an L

ucy

. Lu

cy h

as t

wo

appl

es. H

ow

man

y ap

ples

do

es J

ulie

hav

e?  

(Ver

sio

n w

ith

“few

er”)

: Lu

cy h

as

3 fe

wer

app

les

than

Ju

lie. L

ucy

has

tw

o

appl

es. H

ow

man

y ap

ples

do

es

Julie

 hav

e? 2

 + 3

= ?

, 3 +

2 =

?

(Ver

sio

n w

ith

“mo

re”)

:Ju

lie h

as t

hre

e

mo

re a

pple

s th

an L

ucy

. Ju

lie h

as fi

ve

appl

es. H

ow

man

y ap

ples

do

es L

ucy

hav

e?(V

ersi

on

wit

h “f

ewer

”): L

ucy

has

3

few

er a

pple

s th

an J

ulie

. Ju

lie h

as fi

ve

appl

es. H

ow

man

y ap

ples

do

es

Lucy

 hav

e? 5

– 3

= ?

, ? +

3 =

5

1

2

3

Page 16: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

Ad

apte

d fr

om

Bo

x 2

-4 o

f Mat

hem

atic

s Le

arn

ing

in E

arly

Ch

ildh

oo

d, N

atio

nal

Res

earc

h C

ou

nci

l (2

00

9, p

p. 3

2, 3

3).

Th

ese

take

apa

rt s

itu

atio

ns

can

be

use

d t

o s

ho

w a

ll th

e d

eco

mpo

siti

on

s o

f a g

iven

nu

mb

er. T

he

asso

ciat

ed e

qu

atio

ns,

wh

ich

hav

e th

e to

tal o

n t

he

left

of t

he

equ

al s

ign

, hel

p ch

ildre

n

un

der

stan

d t

hat

th

e =

sig

n d

oes

no

t al

way

s m

ean

, mak

es o

r re

sult

s in

bu

t al

way

s d

oes

mea

n is

th

e sa

me

nu

mb

er a

s.

Eit

her

ad

den

d c

an b

e u

nkn

ow

n, s

o t

her

e ar

e th

ree

vari

atio

ns

of t

hes

e pr

ob

lem

sit

uat

ion

s. B

oth

ad

den

ds

Un

kno

wn

is a

pro

du

ctiv

e ex

ten

sio

n o

f th

e b

asic

sit

uat

ion

, esp

ecia

lly fo

r sm

all

nu

mb

ers

less

th

an o

r eq

ual

to

10

.

Fo

r th

e B

igge

r U

nkn

ow

n o

r Sm

alle

r U

nkn

ow

n s

itu

atio

ns,

on

e ve

rsio

n d

irec

ts t

he

corr

ect

ope

rati

on

(th

e ve

rsio

n u

sin

g m

ore

for

the

big

ger

un

kno

wn

an

d u

sin

g le

ss fo

r th

e sm

alle

r

un

kno

wn

). T

he

oth

er v

ersi

on

s ar

e m

ore

dif

ficu

lt.

Page 17: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

Mat

hem

atic

s G

loss

ary

» T

able

2

PR

INT

TH

IS P

AG

E

Co

mm

on

mu

ltip

licat

ion

an

d d

ivis

ion

sit

uat

ion

s.

UN

KN

OW

N P

RO

DU

CT

GR

OU

P S

IZE

UN

KN

OW

N (“

HO

W

MA

NY

IN E

AC

H G

RO

UP

?” D

IVIS

ION

)

NU

MB

ER

OF

GR

OU

PS

UN

KN

OW

N

(“H

OW

MA

NY

GR

OU

PS?

” D

IVIS

ION

)

3 x

6 =

?3

x ?

= 1

8, a

nd

18

+3

= ?

? x

6 =

18

, an

d 1

8 +

6 =

?

EQ

UA

L G

RO

UP

S

Th

ere

are

3 b

ags

wit

h 6

plu

ms

in e

ach

bag

. Ho

w m

any

plu

ms

are

ther

e in

all?

Mea

sure

men

t exa

mpl

e. Y

ou

nee

d 3

len

gth

s o

f str

ing,

eac

h 6

inch

es lo

ng.

Ho

w m

uch

str

ing

will

yo

u n

eed

alto

geth

er?

If 1

8 p

lum

s ar

e sh

ared

eq

ual

ly in

to 3

bag

s, t

hen

ho

w m

any

plu

ms

will

be

in

each

bag

? M

easu

rem

ent e

xam

ple.

Yo

u

hav

e 1

8 in

ches

of s

trin

g, w

hic

h y

ou

will

cut

into

3 e

qu

al p

iece

s. H

ow

lon

g w

ill

each

pie

ce o

f str

ing

be?

If 1

8 p

lum

s ar

e to

be

pack

ed 6

to

a b

ag,

then

ho

w m

any

bag

s ar

e n

eed

ed?

Mea

sure

men

t exa

mpl

e. Y

ou

hav

e 1

8

inch

es o

f str

ing,

wh

ich

yo

u w

ill c

ut

into

piec

es t

hat

are

6 in

ches

lon

g. H

ow

man

y pi

eces

of s

trin

g w

ill y

ou

hav

e?

AR

RA

YS

, AR

EA

Th

ere

are

3 r

ow

s o

f app

les

wit

h 6

appl

es in

eac

h r

ow

. Ho

w m

any

appl

es

are

ther

e? A

rea

exam

ple.

Wh

at is

th

e

area

of a

3 c

m b

y 6

cm

rec

tan

gle?

If 1

8 a

pple

s ar

e ar

ran

ged

into

3 e

qu

al

row

s, h

ow

man

y ap

ples

will

be

in e

ach

row

? A

rea

exam

ple.

A r

ecta

ngl

e h

as

area

18

sq

uar

e ce

nti

met

ers.

If o

ne

sid

e

is 3

cm

lon

g, h

ow

lon

g is

a s

ide

nex

t to

it?

If 1

8 a

pple

s ar

e ar

ran

ged

into

eq

ual

row

s o

f 6 a

pple

s, h

ow

man

y ro

ws

will

ther

e b

e? A

rea

exam

ple.

A r

ecta

ngl

e

has

are

a 1

8 s

qu

are

cen

tim

eter

s. If

on

e

sid

e is

6 c

m lo

ng,

ho

w lo

ng

is a

sid

e n

ext

to it

?

CO

MP

AR

E

A b

lue

hat

co

sts

$6

. A r

ed h

at c

ost

s 3

tim

es a

s m

uch

as

the

blu

e h

at. H

ow

mu

ch d

oes

th

e re

d h

at c

ost

?

Mea

sure

men

t exa

mpl

e. A

ru

bb

er b

and

is 6

cm

lon

g. H

ow

lon

g w

ill t

he

rub

ber

ban

d b

e w

hen

it is

str

etch

ed t

o b

e 3

tim

es a

s lo

ng?

A r

ed h

at c

ost

s $

18

an

d t

hat

is 3

tim

es

as m

uch

as

a b

lue

hat

co

sts.

Ho

w m

uch

do

es a

blu

e h

at c

ost

? M

easu

rem

ent

exam

ple.

A r

ub

ber

ban

d is

str

etch

ed t

o

be

18

cm

lon

g an

d t

hat

is 3

tim

es a

s

lon

g as

it w

as a

t fi

rst.

Ho

w lo

ng

was

th

e

rub

ber

ban

d a

t fi

rst?

A r

ed h

at c

ost

s $

18

an

d a

blu

e h

at c

ost

s

$6

. Ho

w m

any

tim

es a

s m

uch

do

es t

he

red

hat

co

st a

s th

e b

lue

hat

?

Mea

sure

men

t exa

mpl

e. A

ru

bb

er b

and

was

6 c

m lo

ng

at fi

rst.

No

w it

is

stre

tch

ed t

o b

e 1

8 c

m lo

ng.

Ho

w m

any

tim

es a

s lo

ng

is t

he

rub

ber

ban

d n

ow

as

it w

as a

t fi

rst?

GE

NE

RA

La

x b

= ?

a x

? =

p a

nd

p +

a =

??

x b

= p

, an

d p

+ b

= ?

1

23

1

Page 18: Teaching 2-Step Word Problems - SMARTTraining · PDF file2 5. Steven has a black leather strip that is 13 centimeters long. He cut off 5 centimeters. His teacher gave him a brown leather

Th

e la

ngu

age

in t

he

arra

y ex

ampl

es s

ho

ws

the

easi

est

form

of a

rray

pro

ble

ms.

A h

ard

er fo

rm is

to

use

th

e te

rms

row

s an

d c

olu

mn

s: T

he

appl

es in

th

e gr

oce

ry w

ind

ow

are

in 3

ro

ws

and

6

colu

mn

s. H

ow

man

y ap

ples

are

in t

her

e? B

oth

form

s ar

e va

luab

le.

Are

a in

volv

es a

rray

s o

f sq

uar

es t

hat

hav

e b

een

pu

shed

to

geth

er s

o t

hat

th

ere

are

no

gap

s o

r o

verl

aps,

so

arr

ay p

rob

lem

s in

clu

de

thes

e es

peci

ally

impo

rtan

t m

easu

rem

ent

situ

atio

ns.

Th

e fi

rst

exam

ples

in e

ach

cel

l are

exa

mpl

es o

f dis

cret

e th

ings

. Th

ese

are

easi

er fo

r st

ud

ents

an

d s

ho

uld

be

give

n b

efo

re t

he

mea

sure

men

t ex

ampl

es.

1 2 3