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 have unlike denominators?

Back

Unlike denominators are when the bottom numbers of two or more fractions are different, making it impossible to add or subtract them directly.

Front

How do you add fractions with unlike denominators?

Back

To add fractions with unlike denominators, first find the least common denominator (LCD), convert the fractions to equivalent fractions with the LCD, and then add 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

Solve: 1/4 + 1/2

Back

3/4

Front

What is the first step in subtracting fractions?

Back

Ensure the fractions have a common denominator before subtracting.

Front

Solve: 8/9 - 5/6

Back

1/18

Front

How do you convert a fraction to have a common denominator?

Back

Multiply the numerator and denominator of the fraction by the same number to create an equivalent fraction with the desired denominator.

Front

Solve: 8/9 - 1/3

Back

5/9

Front

What is the result of 4/5 - 1/20?

Back

15/20