Rewrite Fractions with Common Denominators

• Add the numerators (top parts of the fractions).

• Rewrite the fractions in the simplest form. 

• Rewrite the fractions with a common denominator. 

• Make each fraction into an improper faction. 

Which operations with fractions REQUIRE common denominators. Select 2 answers

• Addition

• Subtraction

• Multiplication

• Division

• None of the 4 basic operations

To add or subtract, two fractions must have...

• a monkey.

• unlike terms.

• common denominators.

• the same numerators.

What is the first step in solving this problem? 
⅘ + ½ =

• Add the top parts of the fraction

• Rewrite the fractions in the simplest form. 

• Find a common denominator. 

• Make each fraction into an improper faction. 

You must find the (a)   before you can add or subtract fractions with unlike denominators.

• common denominator

• common numerator

• multiple

• simplified fraction

• 6

• 12

• 8

• 7

• 10

• 15

• 20

• 25

You must find the ​ (a)   before you can add or subtract fractions with unlike denominators.

• common denominator

• common numerator

• multiple

• simplified fraction

Mathematical Equivalence

ON

Which 2 expressions​ do you need to find Common Denominators for?​ (a)   ​ (b)