Challenge Exercises for Multiplying and Dividing Decimals
Directions: Read each question below. You may use paper and pencil to help you solve these problems. Click once in an ANSWER BOX and type in your answer; then click ENTER. Do not use commas in your answers, just digits. After you click ENTER, a message will appear in the RESULTS BOX to indicate whether your answer is correct or incorrect. To start over, click CLEAR.
1. 
Ronnie’s high school ran a carwash. If he bought 25 bottles of soap at $2.95 each, then about how much did he pay?

2. 
About how far can you travel on 14.5 gallons of gas if your hybrid car gets 45.6 miles per gallon?

3. 
Charlie is paid $17.75 per hour and worked 42.5 hours last week. How much money did he earn last week (rounded to the nearest cent)?

4. 
An airplane traveled 2,781.2 miles in 6.5 hours. Estimate the average speed of the plane in miles per hour.

5. 
There are 9 people on an elevator. Together they weigh 1,235.52 lbs. Find the average weight.

6. 
Six wheel barrows of firewood cost $189.95. Rounded to the nearest cent, how much does one wheel barrow cost?

7. 
Lenny worked 15 days for a total of 133.75 hours. How many hours did he average per day? Round your answer to the nearest tenth.

8. 
Jenny has 75.9 lbs. of coffee. If she places the coffee into 3.2lb. bags, then how many bags will she need?

9. 
Lilly has 175.35 gallons of spring water. If she pours the water into 1.5gallon containers, then how many containers will she need?

10. 
Gold costs $804.10 per ounce. If Jeanne purchased $4,189.36 of gold, then how many ounces of gold did she get (round your answer to the nearest tenth)?
