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50×0.25×0.2
=50×0.2×0.25
=10×0.25
=2.5
1.25×0.25×0.2
=1.25×0.2×0.25
=0.25×0.25
=0.0625
6.08×99+6.8
=6.08×（99+1）+0.72
=608.72
=50×0.2×0.25
=10×0.25
=2.5
1.25×0.25×0.2
=1.25×0.2×0.25
=0.25×0.25
=0.0625
6.08×99+6.8
=6.08×（99+1）+0.72
=608.72
追问
有没有其他方法？？
追答
全部都是简便方法
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