Try this:

=IF(AND(A1="",B1=""),"",A1+B1)

Hope this helps.

Pete

On Jan 26, 10:36*am, "Stig - tame racing driver" <Derek-
wrote:
Is there a way of adding blank cells and without getting a result of 0

E.g.

=sum(A1+B2) * *Answer is 0 is there a way of just have a blank cell

Cells A1 and B2 are blank
----------------------------------------

All this to make conditional formatting to work:-
Blank cell = no colour
0 = Green
1 = Yellow
Between 2 and 999 = Red

Hope you can help
Regards