For everybody's sake it is far better to post a detailed question in the body
of your message, not the header!!!

Are you asking how to add numbers in consecutive columns?

=sum(A1:M1)

entered in cell A2 will SUM the numbers in columns A thru M

Are you asking how to INSERT columns?

Click on the headers of the columns where you want the new columns to appear
and then press the Ctrl+ (plus sign) key combination


"debi" wrote:

just a beginner