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 multiple of the denominators of two or more fractions.

Front

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

Back

List the multiples of each denominator: 7 (7, 14, 21, 28, 35, 42) and 6 (6, 12, 18, 24, 30, 36, 42). The smallest common multiple is 42.

Front

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

Back

The common denominator is 18.

Front

How do you convert 3/4 to a fraction with a denominator of 12?

Back

Multiply both the numerator and denominator of 3/4 by 3 to get 9/12.

Front

What is the first step in adding fractions with different denominators?

Back

Find a common denominator for the fractions.

Front

Why is it important to have a common denominator when adding fractions?

Back

A common denominator allows fractions to be combined accurately, as it ensures that the parts being added are of the same size.

Front

What is an example of finding the least common denominator for 1/2 and 3/4?

Back

The least common denominator is 4.

Front

If the denominators are 5 and 10, what is the least common denominator?

Back

The least common denominator is 10.

Front

What is the common denominator for 1/3 and 1/6?

Back

The common denominator is 6.