I guess there may be some formula already so you should copy the data from
various sheets and then paste special 'values' and then do your calculations.

Regards

"Lauralou" wrote:

Hi im trying to copy a line of data from 12 different worksheets each with
difference cell refs to one seperate worksheet so that I can add all the data
to get the difference between them... but I just cant seem to do it, Please
can anyone help... fanx Laura