Multiplying Fractions

Multiplying Fractions

Multiplying Fractions

• When we multiply fractions, we multiply across

• DO NOT NEED TO FIND COMMON DENOMINATORS

Multiple Choice

Do we need a common denominator to multiply fractions?

• YES

• NO

Let's Do Some Examples

Multiple Choice

• 4/8

• 4/15

Fill in the Blanks

Multiple Choice

 $What\ is\ \frac{2}{3\ }\cdot\frac{7}{5}?$  

•  $\frac{9}{8}$  

•  $\frac{14}{8}$  

•  $\frac{31}{15}$  

•  $\frac{14}{15}$  

What happens when we have a mixed number?

Multiple Choice

What is

 $2\ \frac{1}{2}$  as an improper fraction? 

• 1/2 

• 5/2

• 3/2

So, now I have
​
  

 $\frac{5}{2}\ \cdot\ \frac{4}{5}$  

So, now I have
​
  

 $\frac{5}{2}\ \cdot\ \frac{4}{5}$  

Multiply across

What is

 $1\ \frac{1}{3}\ \cdot\ 2\ \frac{2}{3}$  

Multiple Choice

What is

 $1\ \frac{1}{3}\ \$  as an improper fraction?

•  $\frac{4}{3}$  

•  $\frac{3}{3}$  

Multiple Choice

What is

 $2\frac{2}{3}$  as an improper fraction? 

•  $\frac{8}{3}$  

•  $\frac{7}{3}$  

What is

 $\frac{4}{3}\cdot\ \frac{8}{3}$  

What is

 $1\ \frac{2}{3}\ \cdot\ \frac{1}{4}$  

Show me what you know!!  :)