See Cover Page Anomalies and How to control the page numbering in a Word document and Page Numbers in Word 2007-2013.

Page numbers in Word are Fields. To make this work in Word you could go to your cover page and start numbering at 0. I am not sure whether that will change the 35.

Otherwise, you can use calculation fields which will not work in a table of contents.

{ = {Page} - 1} and { = {NumPages} - 1}

If the number of pages is fixed, you could also always simply type in 34 rather than use a numpages field.