Make sure you use print preview before sending your print job to the queue, the last page may have just have 1 or 2 lines of text on it but if you print it you will be charged for the full page. You can then try and adjust the margins of your document or the size of the font to try and fit all of the text onto as fewer sheets as possible.
If you do not want the whole document printed out use the options in the File > Print dialogue box to specify the pages that you want to print, as pointed out in the screen grab below:
You can specify the pages you want printed by typing in the page numbers or choosing to only print a selection of text that you have highlighted.
Alternatively, you can try scaling the number of pages of your document you fit onto one sheet. For example you could fit 2 pages of A4 onto one page and then you would only have 5p deducted from your printer credit instead of 10p.
Try adjusting the margins of your page so that more text will fit on one page. You can do this under File > Page Setup under most applications.
For more advice on printing please contact the IS Helpdesk.