Mastering Addition and Subtraction of Rational Numbers

Lily has 3.5 meters of ribbon. She uses 1.2 meters for a project. How much ribbon does she have left?

• 2.3 meters

• 2.0 meters

• 3.0 meters

• 1.5 meters

Tom bought 2.75 kilograms of apples and 1.5 kilograms of oranges. How many kilograms of fruit did he buy in total?

• 5.0 kilograms

• 3.5 kilograms

• 4.25 kilograms

• 4.0 kilograms

A baker made 4.2 liters of batter. After using 2.3 liters for a cake, how much batter remains?

• 2.0 liters

• 1.9 liters

• 1.5 liters

• 3.0 liters

Sarah read 1.5 hours on Monday and 2.25 hours on Tuesday. How many hours did she read in total?

• 3 hours

• 3.75 hours

• 2.5 hours

• 4 hours

A car traveled 5.6 miles on Monday and 3.4 miles on Tuesday. How many miles did it travel over the two days?

• 7.0 miles

• 10.0 miles

• 8.0 miles

• 9.0 miles

Jake has 6.5 liters of juice. He drinks 1.75 liters. How much juice does he have left?

• 5.25 liters

• 6.0 liters

• 4.75 liters

• 3.5 liters

Emma collected 2.4 liters of rainwater on Saturday and 3.1 liters on Sunday. How much rainwater did she collect in total?

• 4.5 liters

• 3.5 liters

• 5.5 liters

• 6.0 liters

A gardener planted 1.8 meters of flowers in the front yard and 2.2 meters in the back yard. What is the total length of flowers planted?

• 5.0 meters

• 3.5 meters

• 4.5 meters

• 4.0 meters

Mark had 10.5 dollars. He spent 4.75 dollars on a book. How much money does he have now?

• 5.75 dollars

• 10.00 dollars

• 4.75 dollars

• 6.25 dollars

A fish tank holds 15.0 liters of water. If 4.5 liters are removed for cleaning, how much water remains in the tank?

• 12.0 liters

• 8.5 liters

• 10.5 liters

• 5.0 liters