Common Denominator

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 common denominator for two or more fractions.

Front

How do you find the least common denominator of 1/7 and 3/6?

Back

The least common denominator of 1/7 and 3/6 is 42.

Front

What do you need to have when adding unlike fractions?

Back

You need a common denominator.

Tags

CCSS.7.NS.A.1C

Front

Can you add fractions with different denominators directly?

Back

No, you cannot add unlike denominators.

Tags

CCSS.7.NS.A.1C

Front

What is the first step when adding fractions with unlike denominators?

Back

Find a common denominator.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

Which of these numbers could NOT be a common denominator for 1/6 and 1/4? 12, 18, 24, 36

Back

18 could NOT be a common denominator.

Front

If the denominators of two fractions are 4 and 6, what is a common denominator?

Back

A common denominator could be 12.

Front

What is an example of adding fractions with a common denominator?

Back

1/4 + 1/4 = 2/4 or 1/2.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What happens if you add 1/3 and 1/4 without a common denominator?

Back

You cannot add them directly; you must first find a common denominator.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2