Adding and Subtracting Fractions and Mixed Numbers with Like Denominators

When adding and subtracting fractions, which value needs to be the same in all values being added/subtracted?

• Numerator

• Denominator

• 9/2

• 5/4

• 2/7

• 7/2

What is 3/4 + 1/4 = ?

Mathematical Equivalence

ON

What is the sum of these fractions in lowest terms?

• 5/12

• 5/24

• 6/12

• 6/144

What is the sum of these fractions in lowest terms?

• 7/18

• 7/9

• 12/9

• 12/81

When adding fractions with like denominators, the denominators....

• stay the same

• are added together

When adding and subtracting fractions, what needs to be the same?

• the numerator

• the denominator

• nothing

• everything

After changing the denominator, what do you need to do to the numerator?

• Nothing

• Multiply the numerator by the same number as the denominator

• Double it