(1+0.228-0.21)*(0.228-0.21+0.2003)-(1+0.228-0.21+0.2003)*(0.
计算(1+0.21+0.32)x(0.21+0.32+0.43)-(1+0.21+0.32+0.43)x(0.21+0.
(1+0.21+0.32)*(0.21+0.32+0.43)-(1+0.21+0.32+0.43)*(0.21+0.32
(1+0.21+0.32)*(0.21+0.32+0.43)-(1+0.21+0.32+0.43)*(0.21+0.32
0.21其中21循环+0.21其中1循环+0.21=?用分数表示
110分之1乘2.1乘0.54乘55分之54乘0.21乘0.
简便运算:0.61×0.25+0.81×1/4+0.21×25%
2.5*0.4+0.21*3
0.21除以35
巧算0.39×0.21
用简便方法计算3.25*7.8+3.25*0.21+0.
=ROUND(RAND()*(0.611-0.51)+0.21,1)怎么让后面出现两位小数
0.21÷X=2又3分之1 解方程