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UNIT 4 ReviewTopics 7 8

I can use the area model to multiply 2-digit

numbers.

1

Show how you can use the AREA MODEL to find the

produce for the problem below 27 x 35

Show how you can use the AREA MODEL to find the

product for the problem below 27 x 35

20

7

600 210

100 35

30

5

700

245

Answer 945

2

Show how you can use the AREA MODEL to find the

produce for the problem below 56 x 42

Show how you can use the AREA MODEL to find the

produce for the problem below 56 x 42

50

6

2000 240

100 12

40

2

Answer 2352

2100

252

I can use the partial products to multiply

2-digit numbers.

3

Use partial products to find the product to the

problem below 72 x 83

Use partial products to find the product to the

problem below 72 x 83

7 2

x 8 3

3 x 2 6

3 x 70 210 80 x 2

160 80 x 70 5600

5,976

4

Use partial products to find the product to the

problem below 46 x 59

Use partial products to find the product to the

problem below 46 x 59

4 6

x 5 9

9 x 6 54

9 x 40 360 50 x 6

300 50 x 40 2,000

2,714

5

MacKenzie multiplies 13 45. Which of the

following is NOT a partial product? A 15 B 50 C

90 D 400

I can use my knowledge of multiples of 10

to multiply 2-digit numbers.

6

The dentist ordered 10 boxes of toothbrushes.

There are 15 brushes in each box. How many

toothbrushes did the dentist order?

150 toothbrushes

7

Each of the 90 fourth-grade students at William

Street School read 30 books over the school year.

How many books did they read all together?

2,700 books

8

Every day, 60 people eat at Francos Diner. How

many people eat there in 30 days?

1,800 people

9

One centimeter is equal to 10 millimeters. If a

photo is 10 centimeters long, how many

millimeters long is the photo?

100 millimeters

I can round to estimate the product of a set of

numbers.

10

It took Anne 18 hours to drive from her home to

Miami. She drove about 62 miles each hour. How

can you estimate the distance from Annes home to

Miami?

20 x 60 1,200 miles

11

Meg saves 38 each week from the money she earns

working part time. How can you estimate how much

Meg will save in 52 weeks?

40 X 50 2,000

12

Carl volunteers about 32 hours each month at the

local hospital. How can you estimate how many

hours he volunteers in12 months?

30 X 12 360 hours

13

Andy is stacking 49 boxes of paper on the shelves

of an office supply store. Each box weighs about

28 pounds. What is the best estimate of the total

weight of the boxes?

50 30 1,500 pounds

I can use compatible numbers to estimate the

product of a set of numbers.

14

A park ranger takes 24 groups of people hiking

each week. There are 32 people in each group. How

can you use compatible numbers to find the

closest estimate of how many people hike with the

park ranger each week?

25 30 750 people

I can solve multiplication word problems.

15

Jacob reads 68 pages each night. How many pages

does Jacob read in a month with 31 days?

2,108 pages

16

Mark walks 30 minutes every day. How many minutes

does he walk in a month that has 31 days?

930 minutes

17

Mrs. Witt can type 58 words a minute. How many

words can she type in one hour?

3,480 words

18

There are 27 students in Mrs. Brunners class.

Each student does 15 math problems each night.

How many math math problems in all does the class

do in one night?

405 math problems

19

Each of the 27 students in Mrs. Smiths class

brought in18 aluminum cans during the class

recycling drive. How Many aluminum cans did Mrs.

Smiths class collect in all?

486 cans

20

17 students each brought in 20 cookies for the

school bake sale. How many cookies were there

at the bake sale?

340 cookies

21

Genna drinks 74 ounces of water a day. How much

water does she drink over 40 days?

2,960 ounces of water

22

One table in the school cafeteria can seat 12

students. How many students can be seated at

18 tables?

216 students

I can solve multi-step word problems.

23

Fourteen students in Ms. Engels class have 2

pets. Three students have 1 pet. There are 3

students that do not have any pets. How many pets

does the class have all together?

28 3 31 pets

14 2 28 3 1 3

24

Destiny is setting up chairs for a concert. One

section will have 5 equal rows of 15 chairs each.

The other section will have 8 equal rows of 12

chairs each. How many chairs will there be in all?

75 96 171 chairs

5 15 75 8 12 96

I can multiply 2-digit numbers.

25

Find the product. 76 18

1,368

I can write expressions to represent

multiplication word problems.

Write an equation that means 30 is 5 times as

great as 6.

26

30 5 x 6 or 30 6 x 5

Write a number sentence you could use to solve

the following word problemThere are 23 rows in

the auditorium and 18 chairs in each row. How

many total chairs are there in the auditorium?

27

23 x 18

Write a number sentence you could use to solve

the following word problemKatie bought 3 candy

bars that cost 2 each and 2 popcorns that cost

4 each. How much money did she spend?

28

(3x2) (2x4)

(6) (8) 14

Solve

Write a number sentence you could use to solve

the following word problemMrs. Beck took her

class of 23 students and 2 additional chaperones

on a field trip to the zoo. If admission to the

zoo is 8 per adult and 5 per student, what was

the total cost of admission?Solve

29

(3x8) (23x5)(24) (115)139

I can draw arrays to represent 2-digit

multiplication problems.

Draw an array to represent the 12 x 31

30

Draw an array to represent the 12 x 31

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