Least Common Denominator

Front

What is the least common denominator (LCD)?

Back

The least common denominator (LCD) is the smallest number that can be used as a common denominator for two or more fractions.

Front

How do you find the least common denominator of two fractions?

Back

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

Front

Which of these numbers could NOT be a common denominator for 1/6 and 5/18? 6, 18, 36, 108

Back

6

Front

Find the lowest common denominator of these fractions: 2/7 and 2/21. Options: 7, 21, 18, 147

Back

21

Front

What is the least common denominator of 1/9 and 2/3? Options: 6, 3, 9, 21

Back

9

Front

What do you need to have when adding unlike fractions? Options: common denominator, common numerator, common numerator and denominator

Back

common denominator

Front

Find the least common denominator of 3/4 and 3/8. Options: 3, 4, 8, 12

Back

8

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.

Front

Why is it important to find the least common denominator?

Back

Finding the least common denominator is important for adding or subtracting fractions with different denominators.

Front

What is the least common multiple (LCM)?

Back

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