Adding & Subtracting Fractions (Negative & Positive)

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 add fractions with different denominators?

Back

To add fractions with different denominators, find a common denominator, convert the fractions, and then add the numerators. For example, 1/2 + 1/3 = 3/6 + 2/6 = 5/6.

Front

What is the rule for adding a positive and a negative fraction?

Back

When adding a positive and a negative fraction, subtract the absolute values and take the sign of the fraction with the larger absolute value. For example, -3/5 + 8/5 = 8/5 - 3/5 = 5/5 = 1.

Front

What is the result of -3/5 + 8/5?

Back

1

Front

What is the result of -7/4 + 5/4?

Back

-1/2

Front

What is the result of 5/7 + (-9/7)?

Back

-4/7

Front

What is the result of -13/8 + 7/8?

Back

-3/4

Front

What is the rule for subtracting fractions?

Back

To subtract fractions, find a common denominator, convert the fractions, and then subtract the numerators. For example, 3/4 - 1/2 = 3/4 - 2/4 = 1/4.

Front

How do you subtract a negative fraction?

Back

Subtracting a negative fraction is the same as adding its positive equivalent. For example, 11/6 - (-7/6) = 11/6 + 7/6 = 18/6 = 3.