Adding and Subtracting Fractions with Unlike Denominators

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

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

The top number of a fraction is called the _________________

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

The bottom number of a fraction is called the ______________

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

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

•  $\frac{4}{8}$  

•  $\frac{14}{15}$  

•  $\frac{13}{15}$  

•  $\frac{4}{5}$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

 $\frac{1}{2}\ +\ \frac{5}{7}$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

 $\frac{5}{9}\ -\ \frac{3}{6}\ =$  

•  $\frac{2}{3}$  

•  $\frac{1}{18}$  

•  $\frac{3}{18}$  

•  $\frac{2}{9}$  

Tags

CCSS.7.NS.A.1C

What does the fraction bar represent?

• addition

• subtraction

• multiplication

• division

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

 $\frac{8}{11}\ -\ \frac{2}{3}\ =$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

 $\frac{3}{4}\ -\ \frac{6}{10}\ =$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

 $\frac{4}{5}\ -\ \frac{4}{6}\ =$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2