Question

Tính nhanh : 

a, (-4).(+125).(-25).(-8).(-6)

b, (-2).(+12).(-50)

c, (-25).(-26).(-4)

Answer 1

a, ( -4 ).125.( -25 ).( -8 ).( -6 )

= [ ( -4 ).( -25 ) ].[ 125.( -8 ) ].( -6 )

= 100.( -1000 ).( -6 )

= ( -100 000).( -6 )

= 600 000

b, ( -2 ).12.( -50 )

= [ ( -2 ).( -50 ) ].12

= 100.12 = 1200

c, ( -25 ).( - 26 ).( - 4 )

= [ ( -25 ).( -4 ) ].( - 26 )

= 100.( -26 ) = -2600

Answer 2

a) (-4) . 125 . (-25) . (-8) . (-6)

= (-4). (-25) . 125 . (-8) - (-6)

= 100 . (-1000) . (-6)

= -100000 . (-6)

=600000

Answer 3

b)(-2).12.(-50)

= (-2) . (-50) . 12

= 100 . 12

= 1200

Answer 4

c) (-25) . (-26) . (-4)

= (-25) . (-4) . (-26)

= 100 . (-26)

=  -2600

Answer 5

k mk nha Nguyen Quynh Anh