Question

Calcule: a) – 8 + 6 – 1 = b) – 2 – 4 – 1 = c) 12 – 7 + 3 = d) 4 + 13 – 21 = e) (+8) – (+5) = f) (– 8) + (– 5) = g) (– 3) + (+ 9) = h) (+ 2) + (– 7) = i) – 13 + 7 – 2– 8 + 15 – 1 = j) + 22 – 3 – 14 – 5 + 24 + 12 = k) (– 2) – (– 3) + ( +

Answer 1

Resposta:

A) – 8 + 6 – 1 = -3

B) – 2 – 4 – 1 = -7

C) 12 – 7 + 3 = +8

D) 4 + 13 – 21 =-4

E) (+8) – (+5) = +8 -5 = +3

F) (– 8) + (– 5) = -8 -5 = -13

G) (– 3) + (+ 9) = -3 +9 = +6

H) (+ 2) + (– 7) = +2 -7 = -5

I) – 13 + 7 – 2– 8 + 15 – 1 = -2

J) + 22 – 3 – 14 – 5 + 24 + 12 = +36

K) (– 2) – (– 3) + ( +5) = -2 +3 +5 = +6

L) (+6) + (-7) - (-2) = +6 -7 +2 = +1

Explicação passo-a-passo:

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