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 compared or added together.

Tags

CCSS.4.NF.A.1

CCSS.5.NF.B.5B

Front

How do you find the least common denominator (LCD)?

Back

To find the least common denominator, list the multiples of each denominator and find the smallest multiple that appears in both lists.

Front

What is the common denominator for 5/8 and 7/10?

Back

40

Front

What is the common denominator for 2/5 and 3/8?

Back

40

Front

Find the common denominator for 3/10 and 4/7.

Back

70

Front

If the denominators are 9 and 15, what is the common denominator?

Back

45

Front

If the denominators are 8 and 12, what is the common denominator?

Back

24

Front

What is the first step in finding a common denominator?

Back

Identify the denominators of the fractions you are working with.

Front

Why is it important to find a common denominator?

Back

Finding a common denominator is important for adding, subtracting, or comparing fractions.

Tags

CCSS.7.NS.A.1C

Front

What is the least common multiple (LCM)?

Back

The least common multiple is the smallest multiple that two or more numbers share.