Question

1. Elimine os parênteses e depois calcule:
a) 7 + ( - 4) =
b) ( - 5 ) + ( - 10 )=
c) ( + 3 ) - ( 7 ) =
d) ( 3 ) + ( 7 ) + ( - 9 ) =
e) ( - 2 ) + ( 13 ) - ( 8 ) =
f) 15 - ( 15) + ( - 18 ) =
g) ( - 7 ) + ( - 12 ) + ( 22 )=
h) 41 + ( - 100 ) - ( - 19 ) =
i) ( - 70 ) - ( - 30 ) + ( 90 ) + ( - 80 )=
j) ( - 62 ) + ( 84 ) - ( - 16 ) + ( 25 ) + ( -98 ) =

Answer 1

Resposta:

a)3

b) -15

c) -4

d 1

e 3

f -18

g -7

h -78

i -70

j - 111