positive: 解:637÷4=159.25验算如下:<br>159.25x4=637<br>(或:637÷159.25=4)<br>验算完毕。
negative: "6.18÷0.03<br>=618 ÷ 3 <br>= 206<br>验算:<br>0.03 × 206 = 6.18<br>8.05÷35<br>=0.23<br>验算:<br>0.23 × 35 = 8.05<br>竖式见图:<br><img src=""https://iknow-pic.cdn.bcebos.com/3801213fb80e7becf4afe2c5242eb9389b506b99?x-bce-process=image/resize,m_lfit,w_600,h_800,limit_1"" max-height=""200"">"