
Additive Inverse of a number means the corresponding number which when added to the number sums to Zero. Let us say we need to find out additive inverse of 5, then we have to find out a number which when added to 5 yields 0. In this case the answer is 5. Similarly additive inverse of 5 is 5. We can keep on going through such examples and figure out  Additive Inverse Calculator is online tool which takes a number and returns its additive inverse. This calculator works for positive as well as negative decimals as well as whole numbers. 