Add and Subtract Fractions with Models

What number could be a common denominator for these two fractions?

1/5 and 5/6

• 30

• 11

• 6

• 5

2/5 + 3/10

• 7/10

• 5/10

• 1/2

• 5/15

Tags

CCSS.4.NF.C.5

2/3 - 2/4 =

• 4/7

• 2/12

• 2/3

• 1/4

If Rory measures the lemon juice and the vanilla extract into one spoon before adding them to the blender, how much liquid will be in the spoon? (Draw a model!)

• 5/8 teaspoon

• 1/5 teaspoon

• 1/4 teaspoon

• 3/8 teaspoon

What is 7/8 - 2/4?

• 3/8

• 11/8

• 5/12

• 9/12