2.5×0.125×8.2的简便方法
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2.5×0.125×8.2的简便方法2.5×0.125×8.2的简便方法2.5×0.125×8.2的简便方法2.5×0.125×8.2=2.5×0.125×(8+0.2)=2.5×0.125×8+2.
2.5×0.125×8.2的简便方法
2.5×0.125×8.2的简便方法
2.5×0.125×8.2的简便方法
2.5×0.125×8.2
=2.5×0.125×(8+0.2)
=2.5×0.125×8+2.5×0.125×0.2
=2.5×1+2.5×0.025
=2.5+0.625
=3.125