(1)(-8)×(-4又1/20)×1.25×(-0.1)
=-(8×1.25×0.1)×4.05
=-(10×0.1)×4.05
=-4.05
(3)71又15/16×(-8)
=(72-1/16)×(-8)
=-72×8+1/16×8
=-576+1/2
=-575.5
(1)(-8)×(-4又1/20)×1.25×(-0.1)
=-(8×1.25×0.1)×4.05
=-(10×0.1)×4.05
=-4.05
(3)71又15/16×(-8)
=(72-1/16)×(-8)
=-72×8+1/16×8
=-576+1/2
=-575.5