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

How do you add fractions with the same denominator?

Back

To add fractions with the same denominator, keep the denominator the same and add the numerators. For example, 1/4 + 2/4 = (1+2)/4 = 3/4.

Front

How do you subtract fractions with the same denominator?

Back

To subtract fractions with the same denominator, keep the denominator the same and subtract the numerators. For example, 3/5 - 1/5 = (3-1)/5 = 2/5.

Front

What is the first step in adding fractions with different denominators?

Back

The first step is to find a common denominator, which is a multiple of both denominators.

Front

How do you find a common denominator for 1/2 and 1/3?

Back

The common denominator for 1/2 and 1/3 is 6. You can convert 1/2 to 3/6 and 1/3 to 2/6.

Front

What is the result of 1/2 + 1/3?

Back

1/2 + 1/3 = 5/6 after finding a common denominator.

Front

What is the result of 5/7 - 2/7?

Back

5/7 - 2/7 = 3/7.

Front

What is the result of 4/5 + 2/10?

Back

4/5 + 2/10 = 1 after converting 4/5 to 8/10.

Front

What is the result of 18/20 - 17/20?

Back

18/20 - 17/20 = 1/20.

Front

What is the result of 5/10 - 2/10?

Back

5/10 - 2/10 = 3/10.