Do you mean

in A1 type formula and copy that down...
="2." & ROW()

OR

A1 = 2.1
A2 = 2.2
select A1:A2 and drag which will go upto 2.9 and then 3, 3.1




If this post helps click Yes
---------------
Jacob Skaria


"Jim S" wrote:

I'm trying to create a numbering system in a spread sheet with sequential
numbering using decimal points. i.e.

column A
Header
2.1
2.2
2.3
2.4
2.5

etc.