Let's say you have 3245 in cell A1 and want to add 10 to it. You would like
to then see 3255 in the cell.

In an un-used cell put 10. Copy the cell. Select A1 and paste/special with
the add checked.

If you select an entire group of cells and paste/special with the add
checked, Excel will add 10 to all the cells you have selected.
--
Gary's Student


"Tony" wrote:

senario:

I enter a value manually into a cell. At some point later, I want to add
another value to that cell manually, or many times after that. I want the
cell to total the new and added values.

Thanks