Common Denominators

Front

What is a common denominator?

Back

A common denominator is a number that can be used as a denominator for two or more fractions, allowing them to be added or compared.

Front

What is the least common denominator (LCD)?

Back

The least common denominator (LCD) is the smallest number that is a multiple of the denominators of two or more fractions.

Front

Back

4

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the least common denominator of 2 and 8?

Back

8

Front

Back

40

Front

Can you add fractions with different denominators?

Back

No, you cannot add unlike denominators without finding a common denominator first.

Tags

CCSS.7.NS.A.1C

Front

Back

20

Front

How do you find the least common denominator?

Back

To find the least common denominator, list the multiples of each denominator and find the smallest multiple they have in common.

Front

Back

10

Front

What is the least common denominator of 3 and 4?

Back

12