问题标题：
【5.25*8.25.25*0.80.25怎么用简便方法计算?】
问题描述：
5.25*8.25.25*0.80.25怎么用简便方法计算?
陈龙谭回答：
5.25*8.2+5.25*0.8+0.25
=(5+0.25)x8.2+5.25x0.8+0.25
=5x8.2+0.25x8.2+5.25x0.8+0.25
=41+0.25x(8.2+0.8+1)
=41+0.25x10
=41+2.5
=43.5
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