Adding Fractions with Unlike Denominators

Front

What is a fraction?

Back

A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

Front

What does it mean to have unlike denominators?

Back

Unlike denominators are when the bottom numbers of two or more fractions are different, making it necessary to find a common denominator to add or subtract them.

Front

How do you find a common denominator for 1/4 and 3/8?

Back

The least common denominator (LCD) of 4 and 8 is 8. Convert 1/4 to 2/8 to add it to 3/8.

Front

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

Back

The first step is to find a common denominator for the fractions.

Front

What is the sum of 1/4 and 3/8?

Back

1/4 + 3/8 = 5/8.

Front

How do you convert 3/7 to have a denominator of 14?

Back

Multiply both the numerator and denominator by 2 to get 6/14.

Front

What is the sum of 3/7 and 6/14?

Back

3/7 + 6/14 = 12/14.

Front

What is an improper fraction?

Back

An improper fraction is a fraction where the numerator is greater than or equal to the denominator, such as 22/20.

Front

What is the mixed number equivalent of 22/20?

Back

22/20 can be simplified to 1 1/10.

Front

What is the sum of 3/8 and 2/4?

Back

3/8 + 2/4 = 7/8.