2.02乘8.5的简便方法快啊,今天3点半以前
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/06 12:54:13
2.02乘8.5的简便方法快啊,今天3点半以前
![2.02乘8.5的简便方法快啊,今天3点半以前](/uploads/image/z/19604491-43-1.jpg?t=2.02%E4%B9%988.5%E7%9A%84%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E5%BF%AB%E5%95%8A%2C%E4%BB%8A%E5%A4%A93%E7%82%B9%E5%8D%8A%E4%BB%A5%E5%89%8D)
2.02*8.5
=(2+0.02)*8.5
=2*8.5+0.02*8.5
=2*8.5+0.02*(8+5)
=2*8.5+0.02*8+0.02*0.5
=17+0.16+0.01
=17.17
如果还有不懂得地方,你可以问我!
=(2+0.02)*8.5
=2*8.5+0.02*8.5
=2*8.5+0.02*(8+5)
=2*8.5+0.02*8+0.02*0.5
=17+0.16+0.01
=17.17
如果还有不懂得地方,你可以问我!