6.8*0.75/0.5(用简便方法计算)
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6.8*0.75/0.5(用简便方法计算)
6.8*0.75/0.5(用简便方法计算)
6.8*0.75/0.5(用简便方法计算)
=6.8*75/50
=(6+0.8)*1.5
=6*1.5+0.8*1.5
=9+1.2
=10.2
6.8*0.75/0.5(用简便方法计算)
6.8*0.75/0.5(用简便方法计算)
6.8*0.75/0.5(用简便方法计算)
=6.8*75/50
=(6+0.8)*1.5
=6*1.5+0.8*1.5
=9+1.2
=10.2