Adding and Subtracting Fractions

What is the least common denominator for the problem  $\frac{4}{5}-\frac{3}{4}$  ?

• 1

• 9

• 20

• 40

Tags

CCSS.4.NF.A.2

What is the least common denominator for the problem  $\frac{1}{2}-\frac{1}{6}$  ?

• 1

• 2

• 6

• 12

Tags

CCSS.4.NF.A.2

Which fraction is equivalent to  $\frac{1}{2}$  ?

•  $\frac{1}{6}$  

•  $\frac{3}{6}$  

•  $\frac{3}{12}$  

•  $\frac{11}{20}$  

Tags

CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

• 1 7/8
• 2 1/8
• 3
• 6 3/8

Tags

CCSS.7.NS.A.1C

What must you have to add and subtract fractions?

• Common numerators
• Different numerators
• Different denominators
• Common denominators

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

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

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 5/15

• 8/10

• 7/10

• 5/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2