Envision Review Topic 9 Adding and Subtracting Fractions

Elizabeth has two ribbons. One is 1/7 foot long , and the other is 2/5 foot long. Write 1/7 and 2/5 using a common denominator.

• 5/35 and 14/35

• 2/14 and 2/10

• 7/14 and 4/10

• 7/7 and 5/5

Tristan has 1/3 pound of grapes at home. He went to the store and bought 3/8 pound of grapes. What fraction of grapes does Tristan have now?

• 3/24

• 4/11

• 17/24

• 5/25

Andrea painted 1/6 of a room and Yeo painted 1/8 of a room. Rename each fraction using a common denominator

• 1/24 and 2/24

• 4/24 and 3/24

• 2/24 and 6/24

• 6/24 and 8/24

Use the renamed fractions and now find the total amount of the room Andrea and Yeo painted. 1/6 + 1/8 =

• 6/12

• 1/24

• 9/16

• 7/24

1/8 + 3/4 =

• 7/8

• 1 1/40

• 23/24

• 13/24

1/8 + 5/6 =

• 7/8

• 1 1/40

• 23/24

• 13/24

1/8 + 5/12 =

• 1/24

• 2/24

• 23/24

• 13/24

1/8 + 9/10 =

• 7/8

• 1 1/40

• 23/24

• 13/24

For a trip to the beach, Kelly drove for 5/6 of an hour and Joshua drove for 2/5 of an hour. Estimate how much longer Kelly drove than Joshua.

• 5/6 is close to 1 and 2/5 is close to 1/2 so 1 - 1/2 = 1/2

• 5/6 is close to 1 and 2/5 is close to 0 so 1 - 0 = 0

• 5/6 is close to 1/2 and 2/5 is close to 1/2 so 0 - 0 = 0

• 5/6 is close to 1/2 and 2/5 is close to 1/2 so 1/2 - 1/2 = 0

Find the exact answer to 5/6 - 2/5.

• 1/2

• 0

• 13/30

• 3/10