6*4分之+13处4-18*0.25用简便计算怎么做
问题描述:
6*4分之+13处4-18*0.25用简便计算怎么做
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答
6*(1/4)+13/4-18*0.25
=(6+13-18)*(1/4)
=1*(1/4)
=1/4