Question

01ª) Calcule:
A) (– 5) + (+2) – (– 1) + (– 7) = (R: – 9)
B) (+ 2) – (– 3) + (– 5) – (– 9) = (R: 9)
C) (– 2) + (– 1) – (– 7) + (– 4) = (R: 0)
D) (– 5) + (– 6) – (– 2) + (– 3) = (R: – 12)

02ª) Calcule o valor das seguintes expressões:
A) 15 – (3 – 2) + (7 – 4) = (R: 17)
B) – 4 + [– 3 + (– 5 + 9 – 2)] = (R: – 5)
C) – 20 – { – 4 – [– 8 + (+12 – 6 – 2) + 2 +3 ]} = (R: – 15)
D) {[(– 50 – 10) + 11 + 19] + 20} + 10 = (R: 0)

03ª) Calcule o valor das expressões
A) 8 : (– 4) – (– 7) = (R: 5)
B) (– 15) : (– 3) + 7 = (R: 12)
C) 40 – (– 25) : (– 5) = (R: 35)
D) 18 : 6 + (– 28) : (– 4) = ( R: 10)

Answer 1

Resposta:

Explicação passo-a-passo:

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