Question

Exercícios
1) Calcule:
2) Efetue
a) +23+12=
a) (+9) + (+5) =
b) (+3) + (+2)
c) (+4) + (+6)
d) (+7) + (+1) =
e) (+8) + (+6) =
=
c) +193 =
0) +21-5=
e) *11+3=
3) Calcule
a) (+7) + (+3) =
b) (+4) + (+7)=
c) (+21) + (+23) =
d) (+30) + (+15) =
e) (+14) + (+11) =
4 Calcule
a +1-7=
b) 11-20 =
c) +13+17=
e) 14+14=​

Answer 1

a)vai da 35 pois 23+12=35