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1.6×0.25×12.5简便计算 33×1.03简便计算 5.6×99+56×0.1简便计算 6.83×101-6.8

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1.6×0.25×12.5简便计算 33×1.03简便计算 5.6×99+56×0.1简便计算 6.83×101-6.83简便计算
1.6×0.25×12.5简便计算 33×1.03简便计算 5.6×99+56×0.1简便计算 6.83×101-6.8
1.6×0.25×12.5
=4*0.4*0.25*12.5
=4*0.25*0.4*12.5
=0.4*12.5
=5
33×1.03
=33*1+33*0.03
=33+0.99
=33.99
5.6×99+56×0.1
=5.6*99+5.6*10*0.1
=5.6*(99+1)
=5.6*100
=560
6.83×101-6.83
=6.83*(101-1)
=6.83*100
=683