When we add zero to any whole number we get the same whole number Zero is called the additive identity for whole numbers .Is it an additive identity again for integers also Observe the following and fill in the blanks
(i) (-8)+0=-8
(ii) 0+(-8)=-8
(iii) (-23) +0=
(iv) 0+(-37)=-37
(v) 0+(-59)=...
(vi) 0+...=-43
(vii) -61 +....=-43
(vii) -61 +...=-61
(viii) ..+0= .....
The above examples shows that zero is an additive identity for integers . you can verify it by a adding zero to any other five integers . In general , for any integer a ,
a+0=0+a=a