如何简便计算0.72除以1.8除以0.

问题描述:

如何简便计算0.72除以1.8除以0.

=0.72除以(1.8*5)
=0.72除以9
=0.08

先用1.8*0.2=0.36
再0.72/0.36=2嘛
0.72/1.8/0.2=0.72/(1.8*0.2)

0.72÷1.8÷0.2
=0.72÷(1.8+0.2)