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?
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2. |
About how far can you travel on 14.5 gallons of gas if your hybrid car gets 45.6 miles per gallon?
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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)?
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4. |
An airplane traveled 2,781.2 miles in 6.5 hours. Estimate the average speed of the plane in miles per hour.
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5. |
There are 9 people on an elevator. Together they weigh 1,235.52 lbs. Find the average weight.
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6. |
Six wheel barrows of firewood cost $189.95. Rounded to the nearest cent, how much does one wheel barrow cost?
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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.
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8. |
Jenny has 75.9 lbs. of coffee. If she places the coffee into 3.2-lb. bags, then how many bags will she need?
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9. |
Lilly has 175.35 gallons of spring water. If she pours the water into 1.5-gallon containers, then how many containers will she need?
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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)?
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