1. Topics 7 & 8
Review For CFA
Unit 4

2. The dentist ordered 10 boxes of toothbrushes
The dentist ordered 10 boxes of toothbrushes. There are 15 toothbrushes in each box.
How many toothbrushes did the dentist order?
150 toothbrushes

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

4. Every day, 60 people eat at Franco’s Diner.
How many people eat there in 30 days?
1,800 people

5. 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

6. One centimeter is equal to
10 millimeters. If a photo is
10 centimeters long, how many
millimeters long is the photo?
100 millimeters

7. 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

8. 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

9. 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

10. 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 = pounds

11. 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

12. 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

13. 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

14. 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

15. 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

16. MacKenzie multiplies 13 × 45
MacKenzie multiplies 13 × 45. Which of the following is NOT a partial product?
A 15
B 50
C 90
D 400

17. One table in the school cafeteria
can seat 12 students. How many
students can be seated at 18
tables?
216 students

18. Genna drinks 74 ounces of water
a day. How much water does she
drink over 40 days?
2,960 ounces of water

19. 17 students each brought in 20
cookies for the school bake sale.
How many cookies were there at
the bake sale?
340 cookies

20. Mrs. Witt can type 58 words a
minute. How many words can she
type in one hour?
58 * 60 = 3,480 words

21. Jacob reads 68 pages each night.
How many pages does Jacob read
in a month with 31 days?
68 X 31 = 2,108 pages

22. Find the product. 76
× 18
1,368

23. 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