Finding 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

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

Back

List the multiples of each denominator: Multiples of 6: 6, 12, 18, 24...; Multiples of 4: 4, 8, 12, 16...; The smallest common multiple is 12.

Front

What is the least common multiple (LCM)?

Back

The least common multiple is the smallest number that is a multiple of two or more numbers.

Front

What is the common denominator for adding 3/9 + 4/6?

Back

18

Front

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

Back

18

Front

Can you add fractions with different denominators?

Back

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

Front

What is the common denominator for adding 1/2 + 3/4?

Back

4

Front

Which fraction renames 3/4 with a denominator of 12?

Back

9/12

Front

What is the first step in adding fractions?

Back

Find a common denominator for the fractions.

Front

If you have 1/3 and 1/4, what is a common denominator?

Back

12 is a common denominator for 1/3 and 1/4.