Adding Subtracting Fractions

Mrs. Carter was sewing 3 doll shirts from a pattern. She needed 1/5 of a yard of fabric for each. Which equation shows the total amount of fabric needed for the shirts?

• 3 + 1/5 = 3 1/5

• 1/5 + 1/5 + 1/5 = 3/5

• 1/5 + 1/5 + 1/5 = 3/15

• 5/5 + 5/5 + 5/5 + 1/5 = 3 1/5

What is 7 3/8 - 3 1/8?

• 3 2/8

• 3 1/4

• 4 2/8

• 4 1/4

The model is shaded to represent a mixed number. Which expression is equivalent to this mixed number?

• 5/5 + 3/5 + 4/5

• 1 + 4/10

• 5/5 + 3/5 + 1

• 1 + 4/5

Mr. Samson started a trip to his sister’s house with 5/8 of a tank of gas. When he arrived at his sister’s he had 1/8 of a tank of gas left. What fraction of a tank of gas did Mr. Samson use during his trip?

• 1/8

• 4/8

• 5/8

• 6/8

Tracy and Carol each have a chocolate bar. The parts they have eaten are shown in white. How much more of the chocolate bar has Carol eaten than Tracy?

• 3/20

• 3/10

• 2/5

• 7/10

What is 3/4 + 1/4 = ?

• 4/4 

• 0/4

• 2/4

• 1/2

Solve and simplify to lowest terms.

• a

• b

• c

• d

Solve and simplify to lowest terms.

• a

• b

• c

• d

We DO NOT add or subtract the _____________ when doing addition or subtraction with fractions.

• numerators

• denominators

• nouns

• addition signs

• 4/5
• 4/10
• 2/5
• 5