Question

89-27.9的算式怎么写？

Answer 1

①如要简便方法，

89-27.9

=89-28+0.1

=61+0.1

=61.1。

如果题目说的算式是要竖式，

89 - 27.9 = 61.1

Answer 2

你好，这道题用简便算法如下：
89-27.9
=89-28+0.1
=61+0.1
=61.1
望采纳。