0.205ᠧ9.9的简便计算?

2025-04-26 04:48:32
推荐回答(2个)
回答1:


2.0295

回答2:

楼上写的是啥
0.205✘9.9
=0.205x(10-0.1)
=0.205x10-0.205x0.1
=2.05-0.0205
=2.0295