On Sun, 25 Sep 2005 18:13:01 -0700, "Asma"
It's considered polite to post your questions in the Text area, not
just the subject line.
Just based on the subject line, I'd suggest that the answer is...
Don't. An Access Table is NOT a spreadsheet, and it is neither
necessary nor appropriate to do calculations in a Table. Store your
base data in a Table, and use a Query (and/or a Form or Report) to do
the calculations.
John W. Vinson[MVP]