括号三点75+4点1+2点三五反阔成语9.8简便方法怎么算?

2025-03-19 07:04:32
推荐回答(1个)
回答1:

简便计算
(3.75+4.1+2.35)x9.8
=10.2x9.8
=10.2x(10-0.2)
=10.2x10-10.2x0.2
=102-2.04
=99.96