Estimating Sums with Mixed Fractions: Fun Challenges!

Lily has 2 1/2 yards of ribbon. She buys another 1 3/4 yards. How much ribbon does she have now? Estimate the sum first.

• 5 yards

• 3 1/2 yards

• 4 1/4 yards

• 2 3/4 yards

Tom is making a fruit salad. He adds 3 1/2 cups of strawberries and 2 2/3 cups of blueberries. How many cups of fruit does he have in total? Use a number line to help you add.

• 7 cups

• 6 1/6 cups

• 4 3/4 cups

• 5 1/2 cups

A baker uses 1 1/4 cups of sugar for one batch of cookies and 2 1/2 cups for another. How much sugar does he use altogether? Estimate the total before calculating.

• 4 cups

• 3.75 cups

• 3 cups

• 2.5 cups

Sarah read 3 3/4 books this month and plans to read 2 1/2 more. How many books will she have read by the end of the month? Use a number line to visualize the addition.

• 6 1/4

• 4 3/4

• 5 1/4

• 7 1/2

In a garden, there are 4 1/3 feet of flowers on one side and 2 2/5 feet on the other. How many feet of flowers are there in total? Estimate the sum first.

• 7 3/4 feet

• 5 1/2 feet

• 6 1/4 feet

• 6 11/15 feet

A recipe calls for 1 2/3 cups of flour and 3 1/4 cups of sugar. How much flour and sugar does the recipe need in total? Use a number line to assist your addition.

• 2 3/4 cups

• 5 cups

• 3 1/2 cups

• 4 11/12 cups

Jake has 5 1/2 liters of juice. He drinks 2 3/4 liters at a party. How much juice does he have left? Estimate the amount remaining.

• 1.5 liters

• 2.75 liters

• 4 liters

• 3.5 liters

Emma collected 2 1/8 pounds of apples and 3 3/4 pounds of oranges. How many pounds of fruit does she have altogether? Use a number line to help you add.

• 5 1/4 pounds

• 6 pounds

• 5 7/8 pounds

• 4 1/2 pounds

A toy store has 1 3/4 boxes of toys and receives 2 1/2 more boxes. How many boxes of toys does the store have now? Estimate the total before calculating.

• 3 1/4

• 5 1/2

• 4 1/4

• 2 3/4

Mia has 3 1/2 meters of fabric. She uses 1 1/4 meters for a project. How much fabric does she have left? Use a number line to visualize the subtraction.

• 1 1/4 meters

• 3 meters

• 2 1/4 meters

• 2 1/2 meters