Question

1) Resolva as expressões abaixo: a) 18 : 2 x 5 + 6 – 4 = b) 270 : 9 – 3 + (11 + 25 x 2) = c) (640 – 50 x 8) : 6 – 32 = d) 12 + [35 - (10 + 2) +2] = e) [(18 + 3 · 2) ÷ 8 + 5 · 3] ÷ 6 =

Answer 1

Explicação passo-a-passo:

a) 18 : 2 x 5 + 6 – 4 =

9 x 5 +6 - 4 =

45 + 2 =

43

b) 270 : 9 – 3 + (11 + 25 x 2) =

30 - 3 + (11 + 50) =

27 + 61 =

88

c) (640 – 50 x 8) : 6 – 32 =

(640 - 400) : 6 - 32 =

140 : 6 - 32 =

23,3 - 32 =

- 8,7 (aproximadamente)

d) 12 + [35 - (10 + 2) +2] =

12 + 35 - 12 + 2 =

47 - 10 =

37

e) [(18 + 3 · 2) ÷ 8 + 5 · 3] ÷ 6 =

[(18 + 6) ÷ 8 + 15] ÷ 6 =

[24 ÷ 8 + 15] ÷ 6 =

(3 + 15) / 6 =

18 / 6 =

3

Answer 2

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