Question

1. Efetue as operações. a) 3 – 7 . 3 = g) 10 : 5 - 4 = b) 5 + 2 . 8 = h) (- 3) + 12 : 4 = c) 50 – 25 . 2 = i) (- 2) + 3 . 5 – 12 : 6 = d) 30 + 8 : (– 2) = j) (- 16) : 4 . (- 4) = e) 15 : 5 – 10 = k) 4 . 8 : (- 2) = f) 3 + 6 . 2 – 15 : (– 3) =

Answer 1

Resposta:

A) 3 – 7.3 =

3 – 21 = – 18

B) 5 + 2.8 =

5 + 16 = 21

C) 50 – 25.2 =

50 – 50 = 0

D) 30 + 8 : (–2) =

30 + (–4) =

30 – 4 = 26

E) 15 : 5 – 10 =

3 – 10 = – 7

F) 3 + 6.2 – 15 : (–3) =

3 + 12 – (–5) =

3 + 12 + 5 =

15 + 5 = 20

G) 10 : 5 – 4 =

2 – 4 = – 2

H) (–3) + 12 : 4 =

(–3) + 3 = 0

I) (–2) + 3.5 – 12 : 6 =

(–2) + 15 – 2 =

13 – 2 = 11

J) (–16) : 4.(–4) =

(–4). (–4) = 16

K) 4.8 : (–2) =

32 : (–2) = – 16

Abraço!!!