Question

Bài 1.Tính a) (-10).(-5).25.(-20).8

b) (-250).125.(-2)^2.(-2)^3

c) (-25).4+(-4).75

d) (-2)^0.(-2015)^1.(-125)

Answer 1

a) (-10).(-5).25.(-20).8

=[(-10).(-20)].[(-125).8]

=200.(-1000) = -200 000

Answer 2

b) (-250).125.(-2)^2.(-2)^3

= (-250).125.4.(-8)

= [(-250).4].[125.(-8)]

= (-1000).(-1000) = 1 000 000

Answer 3

c)(-25).4+(-4).75

= [(-25)+(-75)].4

= (-100).4 = -400

Answer 4

d) (-2)^0.(-2015)^1.(-125)

= 1.(-2015).(-125)

= 251 875