4.3A/4.3B/4.3E STAAR Add and Subtract Fractions

Front

What is a fraction?

Back

A fraction represents a part of a whole. It consists of a numerator (top number) and a denominator (bottom number). For example, 1/2 means one part out of two equal parts.

Front

What does it mean to add fractions?

Back

Adding fractions means combining two or more fractions to find a total. To add fractions, they must have the same denominator (bottom number). If they don't, you need to find a common denominator first.

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. It allows you to add or subtract fractions easily.

Front

How do you find a common denominator for 1/4 and 1/6?

Back

The least common multiple (LCM) of 4 and 6 is 12. So, the common denominator for 1/4 and 1/6 is 12.

Front

What is the first step in adding 1/4 and 1/6?

Back

The first step is to find a common denominator, which is 12 for 1/4 and 1/6.

Front

How do you convert 1/4 to a fraction with a denominator of 12?

Back

To convert 1/4 to a fraction with a denominator of 12, multiply the numerator and denominator by 3. So, 1/4 = 3/12.

Front

How do you convert 1/6 to a fraction with a denominator of 12?

Back

To convert 1/6 to a fraction with a denominator of 12, multiply the numerator and denominator by 2. So, 1/6 = 2/12.

Front

What is the sum of 3/12 and 2/12?

Back

The sum of 3/12 and 2/12 is 5/12.

Front

What does it mean to subtract fractions?

Back

Subtracting fractions means finding the difference between two fractions. Like addition, the fractions must have the same denominator.

Front

How do you subtract 5/8 from 3/4?

Back

First, convert 3/4 to a fraction with a denominator of 8. 3/4 = 6/8. Then subtract: 6/8 - 5/8 = 1/8.