Adding Common Denominators

Front

What is a common denominator?

Back

A common denominator is a number that is a multiple of the denominators of two or more fractions. It allows you to add or subtract fractions easily.

Front

How do you find a common denominator for 1/4 and 1/2?

Back

The common denominator for 1/4 and 1/2 is 4. You can convert 1/2 to 2/4 to add them.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the sum of 1/4 + 1/4?

Back

1/4 + 1/4 = 2/4, which simplifies to 1/2.

Tags

CCSS.4.NF.B.3A

Front

What is the sum of 2/6 + 3/6?

Back

2/6 + 3/6 = 5/6.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

How do you add fractions with the same denominator?

Back

To add fractions with the same denominator, keep the denominator the same and add the numerators.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is 3/8 + 1/8?

Back

3/8 + 1/8 = 4/8, which simplifies to 1/2.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the difference between 5/8 and 3/8?

Back

5/8 - 3/8 = 2/8, which simplifies to 1/4.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is 2/5 + 1/5?

Back

2/5 + 1/5 = 3/5.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the sum of 4/12 + 2/12?

Back

4/12 + 2/12 = 6/12, which simplifies to 1/2.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is 7/10 + 2/10?

Back

7/10 + 2/10 = 9/10.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D