Fraction Addition & Subtraction

 $\frac{2}{5}+\frac{3}{7}=\frac{5}{12}$  

Is the answer correct? 

• Yes, the problem has been correctly added.

• No, you cannot add fractions with unlike denominators like that.

• No, 5 + 7 is not 12.

• No, 2 + 3 is not 5.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is ALWAYS required when adding/subtracting fractions?

• The same numerators.

• The same denominators.

• Equivalent fractions.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

The number on the top of a fraction is called the:

• numerator

• denominator

• fractionator

• equivalent

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Which is the correct fraction addition problem that matches the picture?

•  $\frac{2}{2}+\frac{2}{4}$  

•  $\frac{2}{4}+\frac{2}{6}$ 

•  $\frac{1}{2}+\frac{2}{4}$ 

•  $\frac{2}{10}+\frac{2}{10}$ 

Tags

CCSS.4.NF.B.3A

What is the first step in solving the problem  $\frac{4}{5}+\frac{1}{2}$  

• Add the numerators (top parts of the fractions).

• Rewrite the fractions in the simplest form. 

• Rewrite the fractions with a common denominator. 

• Make each fraction into an improper faction. 

Tags

CCSS.7.NS.A.1C

What would be the lowest common denominator to use when adding  
 $\frac{3}{4}+\frac{1}{3}$ ? 

•  $\frac{ }{24}$  

•  $\frac{ }{8}$  

•  $\frac{ }{12}$  

•  $\frac{ }{6}$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the lowest common denominator of the problem  $\frac{7}{9}-\frac{1}{6}$  ?

•  $\frac{\ }{3}$  

•  $\ \frac{ }{12}$  

•  $\frac{ }{54}$  

•  $\ \frac{ }{18}$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the correct answer to this fraction addition problem?

• $\frac{7}{9}$

• $\frac{7}{2}$

• $1\ \frac{1}{2}$

• $1\ \frac{1}{3}$

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the the next step to finding this answer?

• Add the numerators (1+1=2)

• Multiply both numerators by 12 .

• Multiply the first numerator by 4 and the second numerator by 3.

• Multiply the first numerator by 3 and the second numerator by 4.

Tags

CCSS.4.NF.B.3A

When subtracting $\frac{5}{6}-\frac{1}{4}$ which of the following are the correct equivalent fractions to use instead ?

•  $\frac{5}{24}-\frac{1}{24}$  

•  $\frac{30}{24}-\frac{4}{24}$  

•  $\frac{20}{12}-\frac{6}{12}$  

•  $\frac{10}{12}-\frac{3}{12}$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2