Least 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 compared or added together.

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 two fractions?

Back

To find the least common denominator, list the multiples of each denominator and find the smallest multiple that appears in both lists.

Front

What is the least common denominator of 1/3 and 1/4?

Back

The least common denominator is 12.

Front

Which of these numbers could NOT be a common denominator for 2/4 and 3/8: 32, 12, 8, 24?

Back

12 is NOT a common denominator.

Front

What is the least common denominator of 2/6 and 7/8?

Back

The least common denominator is 24.

Front

What is the least common denominator of 1/7 and 3/6?

Back

The least common denominator is 42.

Front

Find the least common denominator of 1/5 and 5/9.

Back

The least common denominator is 45.

Front

What is the first step in finding the least common denominator?

Back

The first step is to list the denominators of the fractions you are working with.

Front

Why is it important to find the least common denominator?

Back

Finding the least common denominator is important for adding, subtracting, or comparing fractions.