Math Basics

Basic Mathematical Operations

How is the term inverse used in arithmetic operations?

Inverse operations are those that “undo” another operation. In particular, subtraction is the inverse of addition because a + b - b = a; division is also the inverse operation to multiplication.

The inverse of a number can be expressed as follows: The additive inverse of a real or complex number a is the number that, when added to a, equals 0. In multiplication, the multiplicative inverse of a is the number that, when multiplied by a, equals 1.


This is a web preview of the "The Handy Math Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App