Find the additive inverse of each of the following:
(i)
(ii)
(iii)
(iv)
(v)
(vi)
(vii)
(viii)
(ix)
(x)
Additive inverse of a number 
is the number 
such that, 
Therefore,
(i) Additive inverse of 
is
(ii) Additive inverse of 
is
(iii) Additive inverse of -18 is 18
(iv) Additive inverse of 
is
(v)
Therefore, Additive inverse of 
is
(vi)
Additive inverse of 
is
(vii) Additive inverse of 
is
(viii) Additive inverse of 
is
(ix)
Therefore, Additive inverse of 
is
(x)
Additive inverse of 
is
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