I am attaching three polished SSRS Demo Reports which are self-explanatory. I've spent some time with the third report which generated extra blank pages when export to PDF.
I got some help from this interesting article of Stacia Misner "The Case of the Extra Page: Rendering Reporting Services as PDF" :
but not because of Report Property "Consume Container White Space" = True but just because of experimenting with reducing Report's Body Height.
08/21/2017 - Update - Removed attachments