Question

~10 efetue as operarações
a 3-7.3
b 5+2.8
c 50-25.2
d 30+8:(-2)
e 15:5-10
f 3+6.2-15:(-3)
g{4[2.(8-12)]:2}
h{2+[3:(10-11)+1]:2}
i 5.[(8-5).(2+7)]
j{[(8+4):3}.(3-1)}
k{[(50.3)+(2.25)]:4}

Answer 1

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)

26

e)

15 ÷ 5 - 10

3 - 10

-7

f)

3 + 6 × 2 - 15 ÷ (-3)

3 + 6 × 2 + 5

3 + 12 + 5

15 + 5

20

g)

{4 [2 × (8 - 12)] ÷ 2}

{4 [2 × (-4)] ÷ 2}

{4 - 8 ÷ 2}

{4 - 4}

0

h)

{2 + [3 ÷ (10 - 11) + 1] ÷ 2}

{2 + [3 ÷ (-1) + 1] ÷ 2}