Adding and Subtracting Unlike Fractions

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 are unlike fractions?

Back

Unlike fractions are fractions that have different denominators.

Front

How do you add unlike fractions?

Back

To add unlike fractions, first find a common denominator, convert the fractions, and then add the numerators.

Front

What is a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions.

Front

Example of finding a common denominator for 1/3 and 1/4?

Back

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

Front

How do you subtract unlike fractions?

Back

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

Front

What is the first step in adding or subtracting fractions?

Back

The first step is to find a common denominator.

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) is the smallest multiple that two or more numbers share.

Front

How do you convert fractions to have a common denominator?

Back

Multiply the numerator and denominator of each fraction by the necessary factor to reach the common denominator.

Front

Example of converting 1/3 to have a denominator of 12?

Back

1/3 = 4/12 (multiply both numerator and denominator by 4).