Forget what the reciprocal is? No worries! Homework Unlocked is here to help. Homework Unlocked offers homework help to parents so you can help your kids excel in math. Here, Homework Unlocked reviews what reciprocals are.

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## What is a reciprocal?

Forget what the reciprocal is? No worries!

Every number except for 0 has a reciprocal. For whole numbers the reciprocal is simply 1 divided by that number. This is because all whole numbers can be written as that number over 1. For example, any number X is equal to .

Let’s look at a few examples of the reciprocal of whole numbers.

Given the numbers A, B, C and D,

The reciprocal of A is , B is and C is , etc.

Any number multiplied by its reciprocal is 1. For example,

For fractions, this means that the reciprocal is a fancy term for flipping the numerator and denominator. For example,

The reciprocal of is

For more detailed examples on how to use reciprocals, please see the Homework Unlocked video “Dividing Decimals by Turning a Division Problem into a Multiplication Problem“.

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