Adding & 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 is the numerator in a fraction?

Back

The numerator is the top number in a fraction that indicates how many parts of the whole are being considered.

Front

What is the denominator in a fraction?

Back

The denominator is the bottom number in a fraction that indicates the total number of equal parts the whole is divided into.

Front

What does it mean to add fractions?

Back

To add fractions, you combine the numerators over a common denominator.

Front

What is a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions, allowing them to be added or subtracted.

Front

How do you find the Least Common Denominator (LCD)?

Back

The Least Common Denominator (LCD) is the smallest multiple that is common to the denominators of two or more fractions.

Front

What is the process to add fractions with different denominators?

Back

1. Find the LCD. 2. Convert each fraction to an equivalent fraction with the LCD. 3. Add the numerators and keep the common denominator.

Front

What is the process to subtract fractions with different denominators?

Back

1. Find the LCD. 2. Convert each fraction to an equivalent fraction with the LCD. 3. Subtract the numerators and keep the common denominator.

Front

What is an example of adding fractions? 1/4 + 1/2

Back

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

Front

What is an example of subtracting fractions? 3/4 - 1/2

Back

3/4 - 1/2 = 3/4 - 2/4 = 1/4.