Question

Calcule o valor das expressões: (a) 1,65+(-3,5)-(-2) (b)-1,5-(+0,4)-(-0,32) (c)-0,6-(+2)-(0,3-1,8) (d)-1,75-(0,6+1,2+1,05)

Answer 1

a) = 1,65-3,5+2
    = -1,85+2
    = 0,15

b) =-1,5-0,4+0,32
    = -1,9+0,32
    = -1,58

c) =-0,6-2-(-1,5)
    = -0,6-2+1,5
    = -2,6+1,5
    = -1,1

d) =-1,75-(1,8+1,05)
    = -1,75-2,85
    = -4,6

Answer 2

a)0.15
b)-3.48
c)-4.1
d)-5.5