Adding Fractions and Mixed Numbers

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

Add the fractions. Simplify if needed.

Add the fractions. Simplify if needed.

• 1

• 2

Add the fractions. Simplify if needed.

• 1

• 4/7

• 13/12

• 1 1/12

• 4/12

What is the sum of these fractions in lowest terms?

• 22/5

• 6/3

• 22/15

• 6/15

What is the sum of these fractions in lowest terms?

What is the sum of these fractions in lowest terms?

Find the sum.

• 7/18

• 7/9

• 12/9

• 12/81

• 3/10

• 5/10

• 5/7

• 1 3/10