Question

tính bằng cách hợp lý

-35+35.(-74)-35.25

Answer 1

=-35*(1+74+25)

=-35*100

=-3500

Answer 2

-35+35.(-74)-35.25

= -35.1+35.(-74)-35.25

= 35.( -1 )+35.(-74)-35.25

= 35 . [ ( -1 ) + ( -74 ) - 25 ]

= 35 . ( - 100 )

= -3500

Answer 3

-35 + 35 . ( -74 ) - 35 . 25

= -35 + 35 . [ ( -74 ) - 25 ]

= -35 + 35 . ( -99 )

= 35 . [ ( -99 ) - 1 ]

= 35 . ( -100 )

= -3500

Answer 4

-35+35.(-74)-35.25

= -35.1 + 35. (-74) - 35.25

= -35.1 + (-35).74 - (-35).(-25)

= -35.[1+74-(-25)]

= -35.100

= -3500