4.8*0.23+0.48*7.7怎么简便计算

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4.8*0.23+0.48*7.7怎么简便计算
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4.8*0.23+0.48*7.7怎么简便计算
4.8*0.23+0.48*7.7怎么简便计算

4.8*0.23+0.48*7.7怎么简便计算
4.8*0.23+0.48*7.7
=4.8*0.23+4.8*0.77
=4.8*(0.23+0.77)
=4.8

4.8(0.23+0.77)

4.8*0.23+0.48*7.7
=4.8*0.23+0.48*7.7*10/10
=4.8*0.23+0.48*10*7.7/10
=4.8*0.23+4.8*7.7/10
=4.8*(0.23+0.77)
=4.8