Common Denominators Unlike Fractions

Fractions with different denominators are called _______ fractions .

• Like

• Mixed

• Unlike

• 5/14
• 3/7
• 5/7
• 5/14

What is the least common denominator of 1/4 and 1/3?

• 4

• 3

• 12

• 8

What is the least common denominator of 6/8 and 4/12?

• 12

• 24

• 8

• 16

What is the least common denominator of 1/4 and 2/5?

• 5

• 25

• 10

• 20

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

• common numerator

• common denominator

• equivalent fraction

• mixed number

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

When adding or subtracting fractions, I NEVER add or subtract the...

• numerators

• denominators

• mixed numbers

• equivalent fractions

Solve.

• 5/8

• 23/40

• 21/40

• 1/2