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

Find the common denominator for 1/3 and 2/5.

Back

15

Front

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

Back

24

Front

Find the common denominator for 2/7 and 3/5.

Back

35

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

What is the least common multiple (LCM)?

Back

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

Front

How do you find the LCM of two numbers?

Back

To find the LCM, list the multiples of each number and find the smallest multiple that appears in both lists.

Front

What is the relationship between common denominators and LCM?

Back

The common denominator of two fractions is often the least common multiple (LCM) of their denominators.

Front

Find the common denominator for 1/4 and 1/6.

Back

12