Decimal Operations: Rounding & Problem Solving Challenge

1. Sarah bought 3.5 meters of ribbon for a craft project. If she uses 1.2 meters, how much ribbon does she have left? Round your answer to the nearest tenth.

• 1.5

• 2.0

• 2.3

• 3.0

2. A bottle holds 2.75 liters of juice. If Maria pours out 1.5 liters for a party, how much juice is left in the bottle? Round your answer to the nearest hundredth.

• 0.75

• 2.00

• 1.25

• 1.00

3. Tom has 4.6 kg of flour. He uses 1.75 kg to bake cookies and then buys another 2.3 kg. How much flour does he have now? Round your answer to the nearest tenth.

• 4.0 kg

• 5.2 kg

• 6.0 kg

• 3.5 kg

4. A car travels 15.8 miles on 0.4 gallons of gas. How many miles can it travel on 1 gallon? Round your answer to the nearest whole number.

• 35

• 30

• 25

• 40

5. Lisa read 2.4 books in January and 3.6 books in February. How many books did she read in total? Round your answer to the nearest whole number.

• 8

• 6

• 7

• 5

6. A pizza costs $12.50. If you buy 3 pizzas and pay with a $50 bill, how much change will you receive? Round your answer to the nearest cent.

• $25.00

• $37.50

• $15.00

• $12.50

7. A farmer harvested 5.75 tons of apples. If he sells 2.3 tons, how many tons does he have left? Round your answer to the nearest tenth.

• 2.5

• 6.0

• 4.0

• 3.5

8. A swimming pool is 3.6 meters deep. If it is filled to 2.4 meters, how much deeper can it be filled? Round your answer to the nearest tenth.

• 1.0 meters

• 1.2 meters

• 3.0 meters

• 2.0 meters

9. A book costs $9.99. If you buy 4 books, how much will you spend in total? Round your answer to the nearest cent.

• 39.96

• 34.96

• 49.96

• 29.96

10. A recipe requires 0.75 cups of sugar. If you want to make 4 batches, how many cups of sugar do you need in total? Round your answer to the nearest whole number.

• 3

• 4

• 5

• 2