Adding & 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 is an unlike denominator?

Back

Unlike denominators are denominators that are different from each other.

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.

Front

How do you find a common denominator for 2/3 and 5/12?

Back

The least common multiple (LCM) of 3 and 12 is 12, so the common denominator is 12.

Front

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

Back

The first step is to find a common denominator.

Front

Add 2/3 + 5/12. What is the answer?

Back

1 1/12.

Front

Add 1/4 + 5/8. What is the answer?

Back

7/8.

Front

What is the process to subtract fractions with unlike denominators?

Back

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