Question

ME AJUDEM POR FAVOR!!!!!!!!!!!!!!!!(obs:Mostre o cálculo)

Answer 1

1) -27 - 35 = - 62

2) -42 + 3 = - 39

3) 4 + 18 =22

4) 17 - (+/- 4) = 17 - 4 = 13 ou 17 + 4 = 21

5) 7 x 3 = 21

6) 4 x (+/- 5) = 4 x 5 = 20 ou 4 x (-5) = - 20

7) -7 x 6 = - 42

8) 11 x (-2) = - 22

9) 24 : 12 = 2

10) - 72 : 12 = - 6

11) 24 : 3 = 8

12) 98 : (-7) = - 14

13) 10 x [30 - (2 x 3 + 4) + 15] = 10 x [30 - (6 + 4) + 15] = 10 x [30 - 10 + 15] = 10 x [30 + 5] = 10 x [35] = 350

14) 25 + {14 - [25 x 4 + 40 - (20 : 2 + 10)]} = 25 + {14 - [100 + 40 - (10 + 10)]} = 25 + {14 - [140 - (20)]} = 25 + {14 - [140 - 20]} = 25 + {14 - [1 20]} = 25 + {-106} = 25 - 106 = - 81

15) 27 + {14 + 3 x [100 : (18 - 4 x 2)+7]} : 13 = 27 + {14 + 3 x [100 : (18 - 8)+7]} : 13 = 27 + {14 + 3 x [100 : 10+7]} : 13 = 27 + {14 + 3 x [10+7]} : 13 = 27 + {14 + 3 x 17} : 13 =

27 + {14 + 51} : 13 = 27 + 65 : 13 = 27 + 5 = 32

16) {100 - 413 x (20 - 5 x 4) + 25} : 5 = {100 - 413 x (20 - 20) + 25} : 5 = {100 - 413 x 0 + 25} : 5 = {100 - 0 + 25} : 5 = {125} : 5 = 25

17) 30 - 10 + 7 = 20 + 7 = 27

18) 300 : 6 + 19 = 50 + 19 = 69

19) 25 - 10 : 2 +/- 7 - 27 = 25 - 5 +/- 7 - 27 = 20 +/- 7 - 27 = 20 + 7 - 27 = 0 ou 20 - 7 - 27 = 13 - 27 = - 14

20) 1/2 x 6 - 20 - 3 : 1 = 3 - 20 - 3 = - 20