化简下面的小数.0.0800= 102.270= 0.600=
能简算的要简算+++×(+)÷(3﹣﹣)÷[﹣(+)]
简便运算. 578﹣298 3.64÷4+4.36×25% 23.5+99×23.5.
21×42+21×63﹣21×5= .
(7.88+6.77+5.66)×(9.31+10.98+10)﹣(7.88+6.77+5.66+10)×(9.31+10.98)= .
10×+17×75%﹣7×0.75.