输入=IF(A1>=500,A1-30,IF(A1>=300,A1-20,IF(A1>=200,A1-10,A1)))或者=A1-IF(A1>=500,30,IF(A1>=300,20,IF(A1>=200,10,0)))
=A1-IF(A1>=500,30,IF(A1>=300,20,IF(A1>=200,10,0)))或者=A1-LOOKUP(A1,{-100000,200,300,500},{0,10,20,30})