Question

1) Calcule as adições e as subtrações: a) - 8 + 10 = b) - 23 - 40 = c) + 3 - 10= d) ( + 3 ) + ( - 7) = e) (-10 ) - ( 9 ) = f) ( + 4) - ( 9 ) = 2) Calcule as multiplicações e divisões: a) ( +10 ) . ( 7 ) = b) ( -23 ) . ( -3 )= c) ( -25 ) .( +4 ) = d) ( -12 ) . ( - 8 ) = e) ( + 32 ) : ( - 4 ) = f) ( - 60 ) : ( - 5 ) = g) ( 169 ) : ( - 13 ) = 3) Resolva as expressões: a) 2 + [ 8 - ( 7 - 5 ) + 3 ] b) {16 - [ 12 + ( 20 - 25 )]}

Answer 1

1- a) 2
b) -63
c) -7
d) -4
e) -19
f) -5
2- a) 70
b) 69
c) -100
d) 96
e) -8
f) 12
g) -13
3- a) 11
b) 9