Be careful how you scan - you want the stored scanned text images saved with an optimised palette of 16, 4 or even 2 colours if you can get away with that brutal a level of compression (OK on text specs but too poxy on photos). Saved as either PNG or GIF (never BMP RGB format unless you enjoy wasting space).
The original was probably only black and paper colour so you may have to stretch and palettise each scan in turn to get sensible sizes. Oh and beware of drag and drop onto existing images in a document.
In some variants of Word it is quite possible to create huge orphanned image resources that stick with the file forever but are never displayed again. The worst one I ever saw was on an major PLC intranet
- filesize 60MB meaningful content of active document 2MB + 58MB of deadwood images going right back to the year dot.
Regards, Martin Brown