Add Mixed Numbers Common Denominator

The ____________________ is a common multiple of two or more denominators.

• equivalent

• simplest fraction

• common denominator

• mixed number

I know I must _________ if the question asks for the sum.

• add

• subtract

• divide

• multiply

When the denominators are not the same, I must find a...

• common numerator

• common denominator

• equivalent fraction

• mixed number

What is the sum?

• 
• 
• 
• 

• 1    5/12
• 3     11/24
• 3    11/12
• 3    1/2

1 11/12 + 2 5/12

• 4 1/3

• 3 4/12

• 4 16/12

Solve

• 11 3/4

• 11 3/8

• 11

• 3/4

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators

• add the denominators

• find a common denominator

• find a common numerator