The link you supplied relates to formfields, which are entirely different from content controls. You need to be aware that calculation formfields are buggy when taking inputs from other calculating formfields.

To see how to do a wide range of maths calculations in Word, check out my Microsoft Word Field Maths Tutorial, at:
http://windowssecrets.com/forums/sho...Maths-Tutorial
or:
http://www.gmayor.com/downloads.htm#Third_party

To see how to do about everything you might want to do with date calculations in Word, check out my Microsoft Word Date Calculation Tutorial, at:
http://windowssecrets.com/forums/sho...ation-Tutorial
or:
http://www.gmayor.com/downloads.htm#Third_party
Do read the document's introductory material.

As for adding table rows in a document using formfields, see:
https://www.msofficeforums.com/word-...html#post38312

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]