=56×9.81-56×0.81+56×1
=56×(9.81-0.81+1)
=56×10
=560
56x9.81-5.6x8.1+5.6x10
=56x(9.81-0.81+1)
=56x10
=560
=56×(9.81-0.81+1)
=560
56×9.81-5.6×8.1+5.6×10
=5.6×10×(9+0.81)-5.6×8.1+5.6×10
=5.6×10×9+5.6×10×0.81-5.6×8.1+5.6×10
=56×(9+1)
=560
解:56×9.81-5.6×8.1+5.6×10
原式=56×9.81-56×0.81+56
=56×(9.81-0.81+1)
=56×(9+1)
=56×10
=560