Topics 7 & 8

Review For CFAUnit 4

The dentist ordered 10 boxes of toothbrushes. There are 15 toothbrushes in each box.

How many toothbrushes did the dentist order?

150 toothbrushes

Mark walks 30 minutes every day. How many minutes does he walk in a month that has 31 days?

930 minutes

Every day, 60 people eat at Franco’s Diner.

How many people eat there in 30 days?

1,800 people

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

One centimeter is equal to

10 millimeters. If a photo is

10 centimeters long, how many

millimeters long is the photo?

100 millimeters

Meg saves $38 each week from

the money she earns working part

time. What is the best estimate

of how much Meg will save in

52 weeks?

52 X $40 = $2,080

It took Anne 18 hours to drive

from her home to Miami. She

drove about 62 miles each hour.

Which shows the best way to

estimate the distance from Anne’s

home to Miami?60 X 18 = 1,080 miles

Carl volunteers about 32 hours

each month at the local hospital.

What is the best estimate of how

many hours he volunteers in

12 months?

30 X 12 = 360 hours

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?49 * 30 = 1.470 pounds

A park ranger takes 24 groups of

people hiking each week. There

are 32 people in each group. What

is the best estimate of how many

people hike with the park ranger

each week?

24 * 30 = 720 people

Fourteen students in Ms. Engel’s

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?

14 * 2 = 28

3 * 1 = 3

28

+ 3

31 pets

Destiny is setting up chairs for a

concert. One section will have

5 equal rows of 5 chairs each. The

other section will have 8 equal

rows of 2 chairs each. How many

chairs will there be in all?

5 * 5 = 25

8 * 2 = 16

25

+ 16

4 1 chairs

Each of the 27 students in

Mrs. Madison’s class brought in

18 aluminum cans during the

class recycling drive. How many

aluminum cans did Mrs. Madison’s

class collect in all?486 cans

There are 27 students in Mrs.

Brunner’s class. Each student does

15 math homework problems each

night. How many math problems

in all does the class do in one

night?

405 math problems

MacKenzie multiplies 13 × 45. Which of the following is NOT a partial product?

A 15

B 50

C 90

D 400

One table in the school cafeteria

can seat 12 students. How many

students can be seated at 18

tables?216 students

Genna drinks 74 ounces of water

a day. How much water does she

drink over 40 days?

2,960 ounces of water

17 students each brought in 20

cookies for the school bake sale.

How many cookies were there at

the bake sale?340 cookies

Mrs. Witt can type 58 words a

minute. How many words can she

type in one hour?

58 * 60 = 3,480 words

Jacob reads 68 pages each night.

How many pages does Jacob read

in a month with 31 days?

68 X 31 = 2,108 pages

Find the product.

76

× 18

1,368

Which partial products can be used

to find the product shown below?

51

× 42

A 2 and 2,000

B 10 and 2,400

C 12 and 2,040

D 102 and 2,040