在另一单元格输入
=A1-10+INT(RAND()*20)
或者
=A1+10+INT(-20*RAND())
或者
=ROUND(A1+10+-20*RAND(),0)
或者
=ROUND(A1-10+RAND()*20,0)
Excel2007及以上版
=A1+RANDBETWEEN(-10,10)
=A1-10+rand()*20 单元格设置小数位数为0
2007版:=A1+RANDBETWEEN(-10,10)
=a1+INT(-20*RAND())+10
=A1+Randbetween(-10,10)