Adding and Subtracting 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 denominators (bottom numbers) of two or more fractions are different.

Front

Can you add fractions with unlike denominators directly?

Back

No, you cannot add fractions with unlike denominators directly. You must first find a common denominator.

Front

What is a common denominator?

Back

A common denominator is a number that is a multiple of the denominators of two or more fractions, allowing them to be added or subtracted.

Front

How do you find a common denominator for 1/2 and 1/4?

Back

The least common denominator for 1/2 and 1/4 is 4.

Front

What is the first step to add 1/2 and 1/4?

Back

Convert 1/2 to an equivalent fraction with a denominator of 4, which is 2/4.

Front

What is 1/2 + 1/4?

Back

1/2 + 1/4 = 3/4.

Front

What is 4/6 + 3/6?

Back

4/6 + 3/6 = 7/6.

Front

How do you subtract fractions with unlike denominators?

Back

First, find a common denominator, convert the fractions, and then subtract the numerators.

Front

What is 3/4 - 1/8?

Back

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