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 fractions to be added or subtracted.

Front

How do you find a common denominator for 1/4 and 1/6?

Back

The least common multiple (LCM) of 4 and 6 is 12. So, the common denominator is 12.

Front

What is the equivalent fraction of 1/2 with a denominator of 6?

Back

3/6 is the equivalent fraction of 1/2 with a denominator of 6.

Tags

CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

Solve: 1/3 + 1/3 = ?

Back

2/3

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

Solve: 2/5 + 1/5 = ?

Back

3/5

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

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

Back

Find a common denominator for the fractions.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

Solve: 3/8 - 1/8 = ?

Back

2/8 or 1/4

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What do you do if the denominators are already the same?

Back

You can directly add or subtract the numerators.

Tags

CCSS.7.NS.A.1C

Front

Solve: 5/10 + 2/10 = ?

Back

7/10

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is an example of a fraction with a common denominator of 12?

Back

1/4 and 1/3 can both be expressed with a common denominator of 12 (3/12 and 4/12 respectively).