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 compare them.

Front

How do you find a common denominator for two fractions?

Back

To find a common denominator, identify the least common multiple (LCM) of the denominators.

Front

What is an improper fraction?

Back

An improper fraction is a fraction where the numerator is greater than or equal to the denominator.

Front

Convert the mixed number 2 1/4 into an improper fraction.

Back

2 1/4 = 9/4 (2 * 4 + 1 = 9).

Front

What is the least common multiple (LCM) of 4 and 6?

Back

The LCM of 4 and 6 is 12.

Front

Convert the mixed number 3 2/5 into an improper fraction.

Back

3 2/5 = 17/5 (3 * 5 + 2 = 17).

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

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

Back

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

Front

How do you convert an improper fraction to a mixed number?

Back

To convert an improper fraction to a mixed number, divide the numerator by the denominator and express the remainder as a fraction.