Question

Calcule as adições:
A) ( +3 ) + ( +1 )=
5 2

B) ( -2 ) + ( +5 )=
3 4

C) ( -4 ) + ( +2 )=
9 3

D) (-3) + (+2)=
7 9

E) (-1) + (-7)
8 8

F) (-1) + (-1)
3 5

G) (-1) + (+5)
8 4

H) (+1) + (+3)
5 5

Answer 1

Resposta: A) +4

B) -7

C) -6

D) -5

E) +8

F)+2

G) -6

H) +4