Additive Inverses

Definition of Additive Inverses

The Additive Inverse of a number is the opposite of the number.

A number and its opposite add up to give zero.
They are called additive inverses of each other.

Examples of Additive Inverses

    The additive inverse of 7 is - 7.
    7 + (- 7) = 0
    The additive inverse of - 2 is 2.
    - 2 + 2 = 0

Video Examples: Additive Inverses


Solved Example on Additive Inverses

Ques:
Which of the following is the additive inverse of the sum of 5 and 8?

Choices:

    A. - 13
    B. - 5
    C. - 8
    D. - 3
    Correct Answer: A

Solution:

    Step 1: The sum of 5 and 8 is 13.
    Step 2: The additive inverse of 13 is - 13.