Decimals & Fractions: Estimation and Conversion Challenge

1. Sarah bought 2.5 meters of ribbon for a craft project. If she uses 1.75 meters, how much ribbon does she have left? Estimate your answer first.

• 1.25 meters

• 2.0 meters

• 0.75 meters

• 0.5 meters

2. A recipe calls for 3/4 cup of sugar. Convert this fraction to a decimal and then find out how much sugar is needed if you double the recipe.

• 3/2 cups of sugar

• 1.5 cups of sugar

• 2 cups of sugar

• 1 cup of sugar

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

3. Tom has 5.6 liters of juice. He drinks 1.2 liters. How much juice does he have left? Estimate your answer before calculating.

• 5.0 liters

• 4.4 liters

• 3.4 liters

• 2.4 liters

4. A car travels 2.3 miles in the first hour and 1.8 miles in the second hour. How far did the car travel in total? Round your answer to the nearest whole number.

• 5

• 3

• 4

• 6

Tags

CCSS.7.NS.A.1C

5. Lisa read 1.5 books in January and 2.25 books in February. How many books did she read in total? Convert the fractions to decimals if needed.

• 2.0

• 3.75

• 4.5

• 3.0

Tags

CCSS.7.NS.A.1C

6. A bag of flour weighs 2.5 kilograms. If you use 0.75 kilograms for a cake, how much flour is left? Estimate before calculating.

• 1.75 kilograms

• 1.25 kilograms

• 3.00 kilograms

• 2.00 kilograms

Tags

CCSS.3.MD.A.2

7. A pizza is cut into 8 equal slices. If you eat 3 slices, what fraction of the pizza is left? Convert this fraction to a decimal.

• 7/8 and 0.875

• 1/2 and 0.5

• 5/8 and 0.625

• 3/8 and 0.375

8. A bottle holds 1.5 liters of water. If you pour out 0.6 liters, how much water is left in the bottle? Estimate your answer first.

• 0.9 liters

• 0.5 liters

• 1.0 liters

• 1.2 liters

9. A farmer harvested 4.5 acres of corn and 3.2 acres of wheat. How many acres did he harvest in total? Round your answer to the nearest whole number.

• 7

• 10

• 9

• 8

Tags

CCSS.5.NBT.B.7

10. If a train travels 3.75 miles in the first 15 minutes and 2.5 miles in the next 15 minutes, what is the total distance traveled? Convert the fractions to decimals if necessary.

• 6.25 miles

• 7.00 miles

• 6.00 miles

• 5.75 miles

Tags

CCSS.7.NS.A.3