Question

1. Resolva as expressões
a) -38 + 81 + 7 +(-27) – (-23)

b) (-30): (-2) x 18 -101=

c) (-11) x (-6) – (-7) – 52

Answer 1

Resposta:

A) – 38 + 81 + 7 – 27 + 23 =

43 + (–20) + 23 =

43 – 20 + 23 =

23 + 23 = 46

B) 15 x 18 – 101 =

270 – 101 = 169

C) 66 + 7 – 52 =

73 – 52 = 21