Drill: Adding and Subtracting Similar Fractions

Put a check on the following pairs of similar fractions.

•  $\frac{1}{2}\ \ and\ \frac{\ 3}{2}$ 

•  $\frac{3}{14}\ \ and\ \ \frac{2}{14}$ 

•  $\frac{1}{2}\ \ and\ \ \frac{2}{4}$ 

•  $\frac{1}{7\ }\ \ and\ \ \frac{2}{14}$ 

Complete the sentence:

Similar fractions are ___________________________________.

• fractions with a common denominator

• fractions with a common numerator

• fractions with an equivalent value

• fractions with a numerator of 1

What is the procedure in adding and subtracting similar fractions?

• Add (or subtract) the numerators.

  Copy the common denominator.

  Simplify.

• Add (or subtract) the numerators and the denominators.

  Simplify.

• Add (or subtract) the numerators.

  Solve for the LCD (least common denominator).

  Simplify.

• Add (or subtract) the numerators.

  Multiply the denominators.

  Simplify.

Add and simplify the result:

 $\frac{2}{9}+\frac{4}{9}=$  

•  $\frac{6}{9}$  
  

•  $\frac{2}{3}$  
  

•  $\frac{8}{18}$  

•  $\frac{4}{9}$  
  

Subtract and simplify the result:

 $\frac{3}{5}-\frac{1}{5}=$  

•  $\frac{2}{5}$  
  

• undefined

•  $\frac{2}{10}$  

•  $\frac{1}{5}$  
  

Subtract and simplify the result:

 $\frac{9}{11}-\frac{4}{11}=$  

•  $0$  
  

•  $\frac{5}{11}$  
  

•  $\frac{5}{9}$  

•  $1\ \frac{2}{11}$  
  

Add and simplify the result:

 $\frac{3}{7}+\frac{1}{7}=$  
Please write your answer directly without space.

Subtract and simplify the result:

 $\frac{3}{20}-\frac{8}{20}=$  
Please write your answer directly without space.

Combine and simplify the result:

 $\frac{3}{5}+\frac{4}{5}-\frac{2}{5}=$  
Please write your answer directly without space.

Combine and simplify the result:

 $\frac{13}{15}-\frac{9}{15}+\frac{1}{15}=$  
Please write your answer directly without space.