Question

09 - Calcule:

a) - 10 - (- 7 + 4 - 6)


b) - 100 + 20 : 2



c) 7 : (- 7) + 9 . 2


d) √49 - √64​

Answer 1

Resposta:

a) -10 + 7 - 4 + 6 =

3 - 4 + 6 =

-1 +6 = 5

b) -100+ 20 ÷2

-100 + 10

-90

c) 7 ÷ (-7) + 9 × 2

-1 + 18

17

d) 7- 8

-1