20.12×37-201.2×1.9+4024×0.41简便算法哦

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20.12×37-201.2×1.9+4024×0.41简便算法哦20.12×37-201.2×1.9+4024×0.41简便算法哦20.12×37-201.2×1.9+4024×0.41简便算法哦解

20.12×37-201.2×1.9+4024×0.41简便算法哦
20.12×37-201.2×1.9+4024×0.41
简便算法哦

20.12×37-201.2×1.9+4024×0.41简便算法哦
解20.12×37-201.2×1.9+4024×0.41
=2012×0.37-2012×0.19+2012×0.82
=2012×(0.37-0.19+0.82)
=2012×(0.18+0.82)
=2012×1
=2012