edit number in cell without it changing to text

[Guest]

I recently upgraded from Office 97 to Office 2000. In a worksheet I was
previously able to hit F2 to edit a number, hit the + or - to add or subtract
from the original number. The revised total would show when I hit enter.
Now the number changes to text and shows as 1+1 instead of 2.

 

[Guest]

There needs to be an equal sign preceeding the 1+1. After hitting F2, hit
the home key to put the curson on the left of the existing number value in
the cell then enter "=1+" so you end up with "=1+1" (e.g.).
- Will