1. Resolva as expressões abaixo:

1- 25 +[7 + ( 8 - 4 :2)] =

2- 1000 - [(2 x 4+ 6) + ( 2 + 6 x 4)

3- 80 - [ 22 + ( 5 x 2 - 1 ) + 6] =

4- [ 30 + 2 x ( 5 – 3 ) ] x 2 – 10

5- 60 - [8 + ( 10 - 2 ) : 2] =

6- { 10 + [ 5 x ( 4 + 2 x 5) - 8] x 2 } - 100 =

7- [( 4 + 16 : 2) x 5 - 10] : 10 =

8- 60 + 2 x {[ 4 x ( 6 + 2 )- 10 ]+ 12} =