Alternatively, so that you can continue to see the component parts of the cell value in the formula bar, simply insert a '=' sign before the first # (you might even make this a habit for the initial data entry), then insert a '+' sign followed by the second value. You can keep inserting '+' (or '-') signs followed by values as required.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]