Adding and Subtracting Fractions with Unlike Denominators

What is the sum of 1/3 + 1/3 + 1/8

• 3/14

• 3/11

• 19/24

• 6/8

What is the difference of 7/8-1/3?

• 6/5

• 8/11

• 6/8

• 13/24

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

A recipe for a crumb cake says to mix 3/8 cup of brown sugar and 1/3 cup of white sugar. From this sugar mixture, set aside 1/4 cup for the crumb topping. The remaining sugar mixture is used to make the cake. What amount of the sugar mixture is used to make the cake?

• 11/24 cup

• 1/2 cup

• 7/12 cup

• 17/24 cup

5/7 - 3/5

• 2/2

• 2/35

• 8/12

• 4/35

 $5-2\ \frac{7}{12}$  

•  $3\frac{7}{12}$  

•  $3\ \frac{5}{12}$  

•  $2\ \frac{5}{12}$  

•  $2\ \frac{7}{12}$  

Betty mixed 1/6 pound of peanuts with 1/3 pound of raisins. How much mix did Betty have in all?

• 1/4 pound

• 1/3 pound

• 1/2 pound

• 1 pound

Tags

CCSS.4.MD.A.2

Jill did aerobics for 3/5 hour and then lifted weights for 1/3 hour. How much exercise did Jill get?

• 14/15 hour

• 4/5 hour

• 2/5 hour

• 1/5 hour

A plumber is fitting a water pipe that is 3/4 foot long on to a water pipe that is 2/12 foot long. How long will the finished pipe be?

• 8/16 foot

• 2/12 foot

• 11/12 foot

• 1 foot

Tags

CCSS.4.MD.A.2

Joel made some muffins. He gave 1/4 of the muffins to a neighbor. He took 3/8 of the muffins to school. What fraction of the muffins is left?

• 5/12

• 8/8

• 3/8

• 4/12

Replace each addend with 0, 1/2, or 1. What is the estimate of the sum of 5/8 +8/9?

• $\frac{1}{2}\ +\ 1\ =1\ \frac{1}{2}$

• 0 + 1 = 1

• $\frac{1}{2}\ +\ \frac{1}{2}\ =\ 1$

• 1 + 1 = 2