Number- Using inverse operations to check answers

Topic: Inverse Operations





What are inverse operations?


The word 'inverse' means reverse in direction or position. 

It comes from the Latin word 'inversus,' which means to turn upside down or inside out. 

In mathematics, an inverse operation is an operation that undoes what was done by the

 previous operation.



The four main mathematical operations are addition, subtraction, multiplication, division.

 The inverse of addition is subtraction and vice versa.

 The inverse of multiplication is division and vice versa.



Here are some examples to show how inversion works.

Take this simple addition problem: 4 + 3 = 7.

 If we want to reverse the addition, we just subtract 7 - 3 = 4 and we are back to where
 we started. 



The same is true for multiplication and division: 2 * 8 = 16 and 16 / 8 = 2.

 These are very simple examples, but the rule holds true for even complex addition,

 subtraction, multiplication, and division problems.



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