# Subtraction is Reverse of Addition

We know that counting forward means addition and counting backward means subtraction.

Let us see the following example on the number line.

We can say that subtraction is the inverse of addition.

For every addition sentence there are two corresponding subtraction sentences.

Look at the following examples.

 or 6 + 2 = 8 2 + 6 = 8

Subtraction facts for the above addition sentences are:

 or 8 - 2 = 6 8 - 6 = 2

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