=sum() ignores cells with text in them:

A1: ASDF
A2: 3

=sum(a1:a2) will return 3
=sum(a1+a2) will return a #value! error
(because a1+a2 will return a #value! error)


Ted Rogers wrote:

I attended an Excel training course yesterday and looking through the
handout this morning noticed these lines in the overview:

'.......when to use '=A1+A2' and when to use '=sum(A1:A10)' and why you
should never use '=sum(A1+A2)'. I can't for the life of me remember the
trainer's explanation and can't find the answer anywhere. Could anyone help
please?

Ted

--

Dave Peterson