Add Fractions with Unlike Denominators

Front

What is the first step in adding fractions with unlike denominators?

Back

Find a common denominator for the fractions.

Tags

CCSS.7.NS.A.1C

Front

How do you find a common denominator for two fractions?

Back

Identify the least common multiple (LCM) of the denominators.

Front

What is the least common multiple (LCM) of 4 and 8?

Back

The LCM of 4 and 8 is 8.

Front

How do you convert a fraction to have a common denominator?

Back

Multiply the numerator and denominator by the same number to make the denominator equal to the common denominator.

Front

Convert 3/4 to a fraction with a denominator of 8.

Back

3/4 = 6/8.

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

What is the sum of 6/8 and 2/8?

Back

The sum is 8/8, which simplifies to 1.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the process for adding fractions once they have a common denominator?

Back

Add the numerators together and keep the common denominator.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is 1/9 + 2/27 when finding a common denominator?

Back

The common denominator is 27, so convert 1/9 to 3/27, then add: 3/27 + 2/27 = 5/27.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you simplify the fraction 13/24?

Back

13/24 is already in its simplest form.

Front

What is the sum of 1/4 and 3/8?

Back

Convert 1/4 to 2/8, then add: 2/8 + 3/8 = 5/8.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D