简便计算0.25*7.9*0.5
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简便计算0.25*7.9*0.5简便计算0.25*7.9*0.5简便计算0.25*7.9*0.50.25*0.5*8-0.25*0.5*0.1=1-0.125=0.8750.25*7.9*0.5=1/
简便计算0.25*7.9*0.5
简便计算0.25*7.9*0.5
简便计算0.25*7.9*0.5
0.25*0.5*8-0.25*0.5*0.1=1-0.125=0.875
0.25*7.9*0.5
=1/4*(8-1/10)*1/2
=1/8*(8-1/10)
=1-1/80
=79/80