adding fractions with unlike denominators

In order to ADD fractions, all denominators must be the...

• same

• different

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Name the Least common denominator for the following fractions.

• 12

• 20

• 8

Name the least common denominator for the following fractions.

• 12

• 6

• 15

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Answer explanation

Example:

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 1

Answer explanation

Similar Example:

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• Danny needed to find the Least Common Multiple to find a common denominator of the fractions before adding.

• Danny left his answer as an improper fractions

• Danny did the wrong operation, he did not add.

• Danny did not make a mistake.

Answer explanation

Remember,

Step 1: Find the Least Common Multiple to find a common denominator

Tags

CCSS.7.NS.A.1C

Answer explanation

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

The number on the top of a fraction is called what?

• numerator
• denominator
• fractionator
• equivalent

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B