Adding and Subtracting Fractions

How do you find the common denominator when adding fractions with unlike denominators?

• By multiplying the denominators together

• By finding the greatest common factor

• By finding the least common multiple

• By adding the denominators together

The top number of a fraction is called the _________________

The bottom number of a fraction is called the ______________

 $\frac{3}{5}\ \ +\ \frac{1}{3}\ \ =$  

•  $\frac{4}{8}$  

•  $\frac{14}{15}$  

•  $\frac{13}{15}$  

•  $\frac{4}{5}$  

 $\frac{5}{9}\ -\ \frac{3}{6}\ =$  

•  $\frac{2}{3}$  

•  $\frac{1}{18}$  

•  $\frac{3}{18}$  

•  $\frac{2}{9}$  

What does the fraction bar represent?

• addition

• subtraction

• multiplication

• division