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 the denominator in a fraction represent?

Back

The denominator indicates how many equal parts the whole is divided into.

Front

What does the numerator in a fraction represent?

Back

The numerator shows how many parts of the whole are being considered.

Front

What are unlike denominators?

Back

Unlike denominators are denominators that are not the same in two or more fractions.

Front

What is the least common denominator (LCD)?

Back

The least common denominator is the smallest multiple that two or more denominators share.

Front

How do you find the LCD of 4 and 6?

Back

The multiples of 4 are 4, 8, 12, 16, ... and the multiples of 6 are 6, 12, 18, ... The LCD is 12.

Front

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

Back

The first step is to find the least common denominator (LCD) for the fractions.

Front

What is 7/8 - 3/4?

Back

1/8

Front

What is 2/3 - 1/2?

Back

1/6

Front

What is 9/10 - 3/4?

Back

3/20