Multiplying & Dividing Fractions

Multiplying & Dividing Fractions

Hint: Know your multiplication tables!!!

Multiplying Fractions 

1. Multiply the numerators straight across
2. Multiply the denominators straight across
3. You DO NOT need to find a common denominator! (YAY) 

RECIPROCALS!!

A reciprocal is simply when you flip a fraction upside down by exchanging the numerator and the denominator. This is used in dividing fractions. 

How to find a reciprocal!!

1. Put the numerator where the denominator is
2. Put the denominator where the numerator is. 

THEN YOU CAN EASILY DIVIDE FRACTIONS!! 

Dividing Fractions

• The first fraction stays the same

• The division sign changes to a multiplication sign

• Take the reciprocal of the second fraction

• Then treat it like a regular multiplication problem by multiplying straight across. 

• Reduce or simplify the answer if needed

Multiple Choice

2/3 x 3/4 = 

• 8/9

• 1/3

• 6/12

• 1/4

Multiple Select

 $\frac{7}{10}\ \div\frac{1}{5}\ =$  

• 35/10

• 7/10

• 7/50

• 10/35

Poll

I feel comfortable with multiplying and dividing fractions.

• YES!

• NO!

• Getting there....

• Need more help!