Adding and Subtracting Fractions

Ken uses 3/4 yard of blue yarn and 1/8 yard of red yarn for an art project. What is the total length of yarn Ken uses?

• 7/8 yard

• 1 1/4 yards

• 1 yard

• 1 1/8 yards

Carmen cut a rope into two pieces. The first piece was 2 1/5 inches long. The second piece was 9 3/5 inches long. How long was the rope that Carmen started with?

• 11 4/5

• 6 3/5

• 10 4/5

• 9 3/5

Robert made a fruit salad with 11/12 of a pound of melon and 1/6 of a pound of berries. How many pounds of fruit did Robert use in all?

• 1 1/12

• 3/4

• 2/3

• 1 1/2

Carefully following a recipe to make brownies, Ben used exactly 5/8 of a cup of oil and 3/4 of a cup of water. How many cups of liquid did Ben use in all?

• 1/8

• 2/3

• 1 1/2

• 1 3/8

Is this a correct answer?

• Yes, the student correctly added.
• No, you cannot add unlike denominators
• No, 5 + 7 is not 12
• No, 2 + 3 is not 5

What is the first step in solving this problem? 
⅘ + ½ =

• Add the top parts of the fraction
• Rewrite the fractions in the simplest form. 
• Find a common denominator. 
• Make each fraction into an improper faction. 

At a pizza party, Shawn and his friends drank 2 1/3 bottles of lemon-lime soda and 2 1/3 bottles of cola. How much soda did they drink in all?

• 2 1/3

• 4 2/3

• 0

• 2

Mikela uses 1/6 cups of rye flour and 3/4 cups of wheat flour to make bread. How much flour does Mikela use in all?

• 11/12

• 3/4

• 3/4

• 2/5

Devon combines 1/3 cup of raisins and 1/2 cup of granola to make a snack. How many cups of raisins and granola does Devon use?

• 2/5 cup

• 3/6 cup

• 2/6 cup

• 5/6 cup

Ann spent 1/8 of her allowance to buy paper and 3/4 of her allowance to buy paint. How much of her allowance did Ann spend?

• 1/2

• 7/8

• 1/3

• 1/12