Adding Fractions with Unlike Denominators

What is the least common multiple of 9 and 3?

• 3

• 9

• 18

• 27

What is the sum of 4/9 and 3/9?

• 12/18

• 1

• 7/18

• 7/9

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the least common multiple of 10 and 6?

• 30

• 20

• 60

• 15

What fraction is equivalent to two-sixths when the denominator is changed to 30?

• 10/30

• 15/30

• 5/30

• 12/30

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the sum of these fractions in lowest terms?

• 4/5

• 3/20

• 17/20

• 4/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Sara had 1/2 of a pizza and John had 1/4 of a pizza. They had (a)   of the pizza in total.

• 3/4
• 1/3
• 1/2
• 1/8

Answer explanation

Sara had 1/2 of a pizza and John had 1/4 of a pizza. To find the total, we add the fractions: 1/2 + 1/4 = 3/4. Therefore, they had 3/4 of a pizza in total. The correct choice is 3/4.

Tags

5.3.H

5.3.K

3/5 + 1/4 = 

• 5/20
• 12/20
• 7/20
• 17/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Rachel had 1/8 bag of popcorn. Ethan had 2/3 bag of popcorn. How much popcorn did they have altogether?

• 19/24
• 3/24
• 1/2
• 3/11

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Bob is painting his house. He used  $\frac{1}{8}$  of a gallon of paint in his bathroom, and  $\frac{1}{3}$  of a gallon of paint in his bedroom. How much paint did he use in all?

•  $\frac{11}{24}$  

•  $\frac{3}{14}$  

•  $\frac{3}{24}$  

•  $\frac{11}{14}$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Mathematical Equivalence

ON

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2