Multiplying and Dividing Decimals Word Problems

Question 1

A 32-ounce drink costs $1.28 at the Quickie Mart.
How much does the drink cost per ounce?

Answer 1

$0.04 per oz.
→ The phrase “cost per ounce” means divide the total cost by the number of ounces:

1.28
32
=
0.04
32
1.28
​
=0.04
So, the drink costs 4 cents per ounce.

Question 2

A can contains 16.3 ounces of green beans.
How many ounces would be in 7 cans?

Answer 2

114.1 oz.
→ This is a multiplication problem:

16.3
×
7
=
114.1
16.3×7=114.1
You multiply the ounces per can by the number of cans to find the total.

Question 3

Christina paid $18.75 for 5 tickets to the baseball game.
How much did she pay for each ticket?

Answer 3

$3.75
→ This is a division problem:

18.75
5
=
3.75
5
18.75
​
=3.75
She paid $3.75 per ticket by dividing the total cost by the number of tickets.

Question 4

If wrapping paper costs $0.03 per yard and Anne bought 46.1 yards,
how much did she spend on wrapping paper?
Round your answer to the nearest cent.

Answer 4

$1.38
→ Multiply the cost per yard by the number of yards:

0.03
×
46.1
=
1.383
0.03×46.1=1.383
Now round to the nearest cent (two decimal places):

The thousandths digit is 3, which is less than 5, so we round down.

1.383
→
1.38
1.383→1.38
✅ Final Answer: $1.38

Question 5

If gas costs $1.49 per gallon, how much would you pay for 8.25 gallons?
Round your answer to the nearest cent.

Answer 5

$12.29
→ Multiply the number of gallons by the price per gallon:

8.25
×
1.49
=
12.2925
8.25×1.49=12.2925
Now round to the nearest cent (2 decimal places):

The third decimal is 2

Since 2 is less than 5, we round down

12.2925
→
12.29
12.2925→12.29
✅ Final Answer: $12.29