Name: ______Topic 7 - Study Guide
Dividing Decimals

Directions: Use this sheet as well as your notes from Topic 7 to study for your test Wednesday.

1.  Mr. Dodd filled the gas tank on his lawn mower with 3.8 gallons of gas. If he mowed his yard 10 times on the same tank of gas, how many gallons of gas did he use each time the lawn was mowed? (7-1)

A.  0.038 gallons

B.  0.38 gallons

C.  38 gallons

D.  380 gallons

2.  Kimberly scored a total of 35.104 points for four events for her gymnastic competition. If she scored the same amount on each event, how many points did she score on each? (7-4)

1. 0.8776 points
2. 8.0776 points
3. 8.776 points
4. 87.76 points

3.  The chef at a restaurant brought 37 pounds of salad for \$46.25. How much did she pay for 1 pound of salad?

A.  \$0.125

B.  \$1.25

C.  \$1.30

D.  \$12.50

4.  Consider 9.74 ÷ 0.32. Which of the following would have the decimal place in the correct location? (7-3)

1. 0.03475
2. 3.04375
3. 30.4375
4. 304.375

5.  Which of the following would be the best estimate of 78.4 ÷ 18? (7-2)

A.  740

B.  50

C.  5

D.  4

6.  How much would ten students save if they bought 10 notebooks as a group, rather than individually?

Notebook Prices
Quantity / Cost
1 / \$1.29
2 / \$2.32
5 / \$4.80
10 / \$9.00
As a Group / Individually

7.  Use compatible numbers to estimate the quotient of 46.1 ÷ 2.3. (7-2)

8.  Cora is saving for a vacation. The total cost is \$1,800.36, and she has a year to save the money. How much should she save per month so she can meet her goal? (7-4)

9.  Kara knows that to find the quotient of 56.9 ÷ 103 she needs to change the divisor to standard form. What would the quotient be? (7-1)

10.  A developer owns 24 acres of land. He plans to use 1.2 acres for an entrance into a housing development and divide the remaining into 6 acre lots. How many lots will he have? (7-7)

11.  Jen says that the decimal point in the following problem belongs after the 4. Is she correct? Why or Why not? (7-3)

43.68 ÷ 5.2 = 84.0

12.  Mrs. Frohock bought a watermelon that weighed 10.25 pounds. If she cut it into 5 equal pieces, how many pounds did each piece weigh? (7-4)

13.  Rubi bought 12.5 yards of fabric to make pillows. Each pillow requires 1.75 yards of fabric. Use compatible numbers to estimate the number of pillows Rubi can make. (7-2)

14.  Find 0.64 ÷ 16. (7-3)