The additive inverse of the number a is the number added to a, yields zero. So, we find the following:
(i) 52 + (−52) = 0
Here, −52 is the additive inverse of 52.
(ii) (−176) + 176 = 0
Here, 176 is the additive inverse of −176.
(iii) 0 + 0 = 0
Here, 0 itself is its inverse.
(iv) 1 + (−1) = 0
Here, −1 is the additive inverse of 1.