Paste large excel worksheet into word document

well you could change the size by reducing font /cell height and width
try selecting the whole table and reduce font if it wont go less than 8 just type the value in ,6 is pretty small
so when you are in view 100% thats the size it will copy at

to do it/adjust in word once pasted in
edit select all (or highlight it manually0
change the font to something you can still read
making sure you still have it all selected
then select table from toolbar
use cell height and width
on rows tab select auto from the drop down
on colums tab click autofit, if it still doesnt fit! play about with the manual height and width fittings