Seeing most recently edited parts of word document?

I have a word document I am compiling for my graduate school entrance exam. In it I have sections I)Permutations II)Probabilities III)Number Properties. The doc's length has reached 45 pages

When I add new problems I did to it, I can't just add the new problems to the top of the doc, I have to add them to the correct section. And with 40+ pages I lose where those problems are sometimes. Is there a way for Word or a program I can download to describe what was most recently edited or within a certain date range?

I would guess there is such this is such a pracatical application, but I don't know of it.

It may be too late but Word has the "Track Changes" function in tools. You should have clicked on that when you began.
HERE is some good info on it for future use.

I would suggest using the "find" option for now. You may have success with that. Otherwise, you'll have to scan through manually this time and insert as needed.

Yes, there is a compare option also in the TOOLS drop down menu.

itzcuzimuslim said:   Hey once I track certain changes can I remove the red change dialogue on the right side and make it reappear only when I need it?

Thanks a lot!

I am not sure as I don't really use that feature myself. Do a test by saving it after you remove some and see how it works out for you.