怎样用简便方法计算0.1258*0.258*0.5*64

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怎样用简便方法计算0.1258*0.258*0.5*64
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怎样用简便方法计算0.1258*0.258*0.5*64
怎样用简便方法计算0.1258*0.258*0.5*64

怎样用简便方法计算0.1258*0.258*0.5*64
0.1258*0.258*0.5*64
=(0.125+0.0008)*8*(0.25+0.008)*4
=(1+0.0064)(1+0.032)
=1+0.0064+0.032+0.0064*0.032
=1.0384+0.0002048
=1.0386048