Question

20. Calcule, mentalmente, os calculos.
a) (-2)-(-4)-(+5)-6=
b) (-4)-(-1)-(+5)-(+3)-(-2) =
c) (-8)-(+2)+(+7)-(-5) =
d) (-12)-(-4)-(-1)-(+25) =
e) (-50)-(+4)-(-2)-(-20) -0 =
f) (+10)-(-3)-(-1)-(-4)=
​

Answer 1

Resposta:

a) -9

b) -9

c) 2

d) -32

e) -32

f) 18

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