Question

1)calcule o valor das expressoes. a)3.15-4.5+1 B)5.(-10)-2.(-4)+5.(-3).(-1) C) (-40):(-8)+(-64):8 D) -4.2+3.(-5)-5.2.4

Answer 1

a)3.15-4+1
45-4+1
41+1
24

b)5.(-10)-2.(-4)+5.(-1)
-50+8-5
-47

c)(-40):(-8)+(-64):8
5+(-8)
5-8
-3

d)-4.2+3.(-5)-5.2.4
-8+(-15)-10.4
-8-15-40
-63

Bons Estudos!