Homework 3-13
Name
Multiplying with
Money
Another Look!
Caroline earns $5.40 per hour for babysitting her brother.
She babysat for 2.5 hours on Friday and 4 hours on
Saturday. How much did Caroline earn?
Estimate.
$5.40 × 2.5
$5 × 3 = $15
$5.40 × 4
$5 × 4 = $20
$15 + $20 = $35
Multiply.
Add.
2
× 2.5
2700
+ 1080
$13.500
1
1
$5.40
$13.50
4
$21.60
+ $21.60
$35.10
$5.40
×
Caroline earned
$35.10.
13.500 = $13.50
$35.10 is close to
the estimate $35.
So, the answer is
reasonable.
For 1, estimate first, then find each product. Check that
your answer is reasonable.
1. Rocco sells his used books at a garage sale. He sells paperback
books for $1.20 each and hardcover books for $2.25 each. He sells
12 paperback and 9 hardcover books. How much does Rocco earn?
Estimate. Then find the answer. Is your answer reasonable? Explain.
$0.50
2.
×
13
6. $7.62 × 1.5
10. $11.24 × 6.5
3. $22.39
×
3
4.
7. $0.08 × 0.5
8. $37.05 × 0.2
11. 7 × $0.27
$1.98
×
5. $40.60
×
5
42
12. 1.4 × $5.85
Digital Resources at PearsonTexas.com
9. $6.25 × 3.2
13. $12.62 × 4.5
Topic 3 Lesson 3-13
175
14. George buys 1.5 pounds of apples, 2.7 pounds of
oranges, and 1.9 pounds of grapes. How much
change does he get from a $10 bill?
A
B
C
D
$3.05
$6.95
$7.40
$8.50
The table shows the coins saved by Tina and her
sister for one year.
15. Find the total value of each type of coin the
girls have saved.
Apples
Grapes
Oranges
Type of Coin
$0.30/lb
$0.80/lb
$0.40/lb
Number Saved
1,000
100
16. Find the total value for the coins saved
by the sisters.
1,000
10
17. Represent The fifth-grade planning
committee needs to buy items for
sandwiches for its annual lunch.
Complete the chart to determine the
amount of money they’ll need to buy
each item. Then find the cost to buy all
of the items for sandwiches.
18. Analyze Information Reba is making a
tablecloth. She needs 3.6 yards of fabric
and has $20.00 to spend. Floral fabric
costs $4.95 per yard, and striped fabric
is $5.75 per yard. Can Reba afford either
fabric? Explain.
176
Item
Amount
Price
15.5
pounds
$3.50
per pound
10.5
pounds
$2.90
per pound
12
packages
$2.50 per
package
Total
19. Extend Your Thinking Jackie wants to
download songs to her computer. Each
song costs $1.99. She has $15 and a
coupon for $2.00. How many songs can
Jackie download? Explain.
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