ESCOLA__________________________________
DOCENTE_____________________________
DISCENTE_________________________
a) Calcule
o valor das seguintes expressões
1) 15 - (3-2)+(7-4) = (R: 17)
2) 25 - ( 8 - 5 + 3) - ( 12 - 5 - 8) = (R: 20 )
3) ( 10 -2 ) - 3 + ( 8 + 7 - 5) = (R: 15)
4) ( 9 - 4 + 2) - 1 + (9 + 5-3) = (R: 17)
5) 18 - [2 + ( 7 - 3 - 8 ) - 10] = (R: 30 )
6) 25 - { -2 + [ 6 + (- 4 -1 )]} = (R: 26)
7) 3 - { -5 -[8 - 2 + (-5 + 9) ]} = (R: 18)
8) {2 + [ 1 + (-15 -15 )- 2]} = (R: -29)
9) 20 + {[ 7 + 5 + (-9 + 7 ) + 3]} = (R: 33)
10) 10 - { -2 + [ +1 + ( +7 - 3) - 2] + 6 } = (R:
3 )
11) {[(-50 -10)+ 11 + 19] + 20 }+ 10 = (R: 0)
