When we add any two distinct numbers, if their sum is zero, then these numbers are additive inverse of each other.
1. Additive inverse of -5:
-5 + 5 = 0
Thus, additive inverse of -5 is 5.
2. Additive inverse of 11:
11 + (-11) = 0
Thus, additive inverse of 11 is -11.
3. Additive inverse of -1:
-1 + 1 = 0
Thus, additive inverse of -1 is 1.
4. Additive inverse of 0:
0 + 0 = 0
Thus, additive inverse of 0 is 0.