Resuelve las siguientes adiciones:
a. ( 3 ) + ( 5 ) =
b. ( –7 ) + ( 8 ) =
c. ( 10 ) + ( –13 ) =
d. ( –9 ) + ( –2 ) =
e. ( –4 ) + ( –11 ) =
f. ( 4 ) + ( –6 ) + ( –8 ) + ( 10 ) + ( –2 ) =
g. ( –10 ) + ( –8 ) + ( 1 ) + ( –6 ) + ( –30 ) =
h. ( 7 ) + ( –2 ) + ( 9 ) + ( 3 ) + ( –2 ) =