Question

01- Calcule: a) – 8 + 6 – 1= b) (+8) – (+5) = c) – 13 + 7 – 2– 8 + 15 – 1= d) – 2 – 4 – 1 f) (– 8) + (– 5)= e) + 22 – 3 – 14 – 5 + 24 + 12 = f) 12 – 7 + 3 = g) (– 3) + (+ 9) = h) (– 2) – (– 3) + ( + 5)= i) 4 + 13 – 21 h) (+ 2) + (– 7) l) ( + 6) + (– 7) – (– 2)= j) (+5) ∙ (+ 3)= k) (+ 15) ’ (−4 + 1)= l) (+ 4) ∙ (– 5)= m) (+ 20) ÷ (– 3 − 2)= n) (– 750): (−11 + 21) =

Answer 1

Resposta:

a) – 8 + 6 – 1=

-9 +6 = - 3

b) (+8) – (+5) =

8 - 5 = 3

c) – 13 + 7 – 2– 8 + 15 – 1=

-13 -11 + 7 +15 =

- 24 + 22 = - 2

d) – 2 – 4 – 1 = - 7

e) + 22 – 3 – 14 – 5 + 24 +12 =

22 + 24 + 12 - 3 -14 - 5 =

58 - 22 = 36

f) (– 8) + (– 5)=

- 8 - 5 = - 13

g) (– 3) + (+ 9)=

- 3 + 9 = 6

h) (– 2) – (– 3) + ( + 5)=

- 2 + 3 + 5 =

- 2 + 8 = 6

i) 4 + 13 – 21=

17 - 21 = - 4

h) (+ 2) + (– 7)

2 - 7 = - 5

l) ( + 6) + (– 7) – (– 2)=

6 - 7 + 2 =

8 - 7 = 1

j) (+5) ∙ (+ 3)=

5 . 3 = 15

k) (+ 15) ’ (−4 + 1)=  (está correto a letra k, como você copiou.)

15 . - 4 + 15 . 1 =

- 60 + 15 = - 45

l) (+ 4) ∙ (– 5)=

4 . - 5 = - 20

m) (+ 20) ÷ (– 3 − 2)=

20 : - 5 = - 4

n) (– 750): (−11 + 21) =

- 750 : 10 = - 75

Explicação passo-a-passo:

Answer 2

Resposta:

a) – 8 + 6 – 1= -3

b) (+8) – (+5) = -13

c) – 13 + 7 – 2– 8 + 15 – 1= -2

d) – 2 – 4 – 1 = - 7

f) (– 8) + (– 5)= -13

e) + 22 – 3 – 14 – 5 + 24 + 12 =36

f) 12 – 7 + 3 = 8

g) (– 3) + (+ 9) = -27

h) (– 2) – (– 3) + ( + 5)= 15

i) 4 + 13 – 21=-4

h) (+ 2) + (– 7) =9

l) ( + 6) + (– 7) – (– 2)= 15

j) (+5) ∙ (+ 3)= -8

k) (+ 15) ’ (−4 + 1)= 20

l) (+ 4) ∙ (– 5)= 9

m) (+20) ÷ (– 3 − 2)=5

n) (– 750): (−11 + 21) =782