7.29*5.8+0.42*72.9怎么简便计算
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7.29*5.8+0.42*72.9怎么简便计算
7.29*5.8+0.42*72.9怎么简便计算
7.29*5.8+0.42*72.9怎么简便计算
7.29*5.8+0.42*72.9
=7.29*5.8+4.2*7.29
=7.29*(5.8+4.2)
=7.29*10
=72.9
7.29*5.8+0.42*72.9
=7.29×(5.8+4.2)
=7.29×10
=72.9
=7.29*5.8+4.2*7.29=7.29*10=72.9
7.29*5.8+0.42*72.9
=7.29*5.8+4.2*7.29
=7.29*(5.8+4.2)
=7.29*10
=72.9
7.29*5.8+0.42*72.9
=7.29*(5.8+4.2)
=7.29*10
=72.9
7.29*5.8+0.42*72.9
=72.9*0.1*5.8+0.42*72.9
=72.9*0.58+0.42*72.9
=72.9*(0.58+0.42)
=72.9*1
=72.9
7.29*5.8+0.42*72.9=72.9*0.58+72.9*0.42=72.9*(0.58+0.42)=72.9
7.29*5.8+0.42*72.9
=7.29*10*5.8+0.42*10*72.9
=72.9*5.8+4.2*72.9
=72.9*(5.8+4.2)
=72.9*10
=729
7.29*5.8+0.42*72.9怎么简便计算
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