Adding and Subtracting Fractions

To add or subtract, two fractions must have...

• a monkey.

• unlike terms.

• common denominators.

• the same numerators.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

If I want to add pineapple to  $\frac{6}{12}$  of my pizza, that is equal to...

•  $\frac{1}{6}$  .

•  $\frac{3}{4}$  .

•  $\frac{2}{1}$  .

•  $\frac{1}{2}$  .

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Evaluate the expression:  $\frac{2}{3}+\frac{1}{6}$  

• 1

•  $\frac{5}{6}$  

•  $\frac{7}{8}$  

•  $\frac{3}{3}$  

Tags

CCSS.7.NS.A.1C

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. 

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 14/16
• 7/8
• 8/7
• 4/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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

• 1/12
• 1
• 2/35
• 23/25

Tags

CCSS.7.NS.A.1C

$\frac{3}{5}-\frac{2}{6}$

• 0

• $\frac{1}{3}$

• $\frac{1}{30}$

• $\frac{4}{15}$

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 14/16
• 7/8
• 8/7
• 4/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Add the fractions together?

• 3/8
• 11/15
• 2/15
• 1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2