0.25×4.73×0.125×320×16.08×0.125的简便计算?
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2020-01-02
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0.25×4.73×320×16.8×0.125简便计算?
解:原式=0.25×4.73×16.8×0.125×0.125×(5×8×8)
=0.25×4.73×(16.8×5)×(0.125×8)×(0.125×8)
=(0.5×0.5)×4.73×84×1×1
=84×0.5×0.5×4.73
=42×0.5×4.73
=21×4.73
=(20+1)×4.72
=20×4.73+1×4.73
=94.6+4.73
=99.33
解:原式=0.25×4.73×16.8×0.125×0.125×(5×8×8)
=0.25×4.73×(16.8×5)×(0.125×8)×(0.125×8)
=(0.5×0.5)×4.73×84×1×1
=84×0.5×0.5×4.73
=42×0.5×4.73
=21×4.73
=(20+1)×4.72
=20×4.73+1×4.73
=94.6+4.73
=99.33
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好像不是这么写的
好像不是这么写的
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