Sorry to be so confusing, I will try again. Cell A1 contains the number '10'. Cell A2 contains the number '20'. My formula in cell A3 is '=A2+A1' But if I now scroll down the column the next cell would add A3+A2 and so on. I don't want this, I want each cell to add A1 all the time. Eg: A2+A1 A3+A1 A4+A1 A5+A1 A6+A1 etc etc etc. Hope you can help. Thanks.