简便计算 17.5*0.25+12.5/4

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简便计算 17.5*0.25+12.5/4
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简便计算 17.5*0.25+12.5/4
简便计算 17.5*0.25+12.5/4

简便计算 17.5*0.25+12.5/4
17.5*0.25+12.5/4
=¼×﹙17.5+12.5)
=¼×30
=7.5

0.25*(17.5+12.5)=7.5

0.25=1/4
17.5*0.25+12.5/4
=17.5*0.25+12.5*0.25
=0.25*(17.5+12.5)
=0.25*30=7.5