Question

1) Resolva as expressões numéricas:

a) [(64 - 16:4) + (48 x 10 - 180)] x 5

b) {(10 x 10 + 4 x 11):12 - [(20 + 19 x 10): 7+ 15]) + 50

c) [(64 - 16x 4) + (48 x10 - 180)] :5

d) 2 + 8 - 3 - 5+ 15

e) 12' + [35 - (10 + 2) +2]

f) [(18 + 3 x2) : 8 + 5 x 3]: 6

9) [10 • (54 - 5 x 6)] : (5 -3) + 19

h)[- (2 4 - 8) · 2- 24]- [2 2 - (-3 + 2)​

Answer 1

a) [(64 - 4) + (480 - 180)] x 5
[(60) + (300)] x 5
[360] x 5
1800

b){(20 x 44):12 - [(20+ 190): 22]}+ 50
{(880):12 - [(210):22]}+ 50
{220/3 - 105/11} + 50
{220x11 - 105x3} +50
-----------------------
33
{2420 - 315} +50
-----------------------
33
{2105} + 50
---------
33

2105+ 50x33
-----------------------
33

2105+ 1650
-----------------------
33

3755
---------- =113,7878787878788
33

c)[(64 - 64) + (480 - 180)] : 5
[(0) + (300)] : 5
[300] : 5
60

d)17

e) 12 + [35- (12) +2]
12+ [25]
37

f)[(18+6) : 8+ 15] :6
[24: 23] :6
24/23 : 6/1
24/23 x 1/6
24/138
12/69
4/23

g) [10x (54- 30)] : 2 + 19
[10x 24] :21
240/21
80/7

h) [- (16) x 2- 24] - [22 - (-1)]
[-32 - 24] - [22 + 1)]
[-56] - [23]
-79