Adding and Subtracting 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 does it mean to add fractions with like denominators?

Back

When adding fractions with like denominators, you keep the denominator the same and add the numerators.

Front

What does it mean to add fractions with unlike denominators?

Back

To add fractions with unlike denominators, you must first find a common denominator before adding the numerators.

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 subtract fractions?

Back

To subtract fractions, ensure they have the same denominator, then subtract the numerators and keep the denominator the same.

Front

What is an example of adding fractions with like denominators?

Back

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

Front

What is an example of adding fractions with unlike denominators?

Back

1/3 + 1/6 = 1/2 (after finding the common denominator of 6).

Front

How do you convert fractions to have a common denominator?

Back

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

Front

What is the result of 8/9 - 1/3?

Back

5/9.

Front

What is the result of 1/4 + 1/2?

Back

3/4.