12.65*6.4+1.625*3.6简便算法!

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12.65*6.4+1.625*3.6简便算法!12.65*6.4+1.625*3.6简便算法!12.65*6.4+1.625*3.6简便算法!.12.65*6.4+1.625*3.6变为16.25*

12.65*6.4+1.625*3.6简便算法!
12.65*6.4+1.625*3.6简便算法!

12.65*6.4+1.625*3.6简便算法!
.12.65*6.4+1.625*3.6变为16.25*6.4+1.625*3.6或者12.65*6.4+1.265*3.6可以有简便计算 16.25*6.4+1.625*3.6
=1.625*(0.64+3.6)
=1.625*(4+0.04)
=6.5+0.065
=6.565
12.65*6.4+1.265*3.6
=1.265*(0.64+3.6)
=1.265*(4+0.04)
=5.06+0.0506
=5.1106