如要两位小数的=60.2+2*ROUND(RAND(),2)要三位的=60.2+2*ROUND(RAND(),3)当然别忘了，设格式为数值2位（3位）小数
=60.2+INT(0.2*rand（）*100)*2/100
=FLOOR(60.2+0.2*RAND(),0.02)
