2.4乘以(1-30%),这道题怎样算,
2.4乘以(1-30%),这道题怎样算,
[1-2分之一}乘以{1-3分之一}乘以{1-4分之一]乘以等等乘以{1-199分之一}怎样算
(72+23)乘以(85-27)怎样简便怎样算
9.8乘以65.2乘以1.25减12.5乘以0.625乘以18怎样简算
99乘以63怎样简便怎样算
4.6乘以(30除以7.5)怎样简便计算?
12.5乘以0.25再乘以64怎样算简便
81乘以710-71乘以810怎样巧算
怎样巧算 3333乘以4444加3334乘以2222
48乘以0.69+3.1乘以4.8怎样简便算
432.1乘以123.4-432.2乘以123.3(怎样简便计算)
怎样算简便就怎样算;8/13除以7+1/7乘以6/13=