Assignment Question (IP masks) - Did I do it correctly?

[smjpl]

I have filled in the answers to the questions into the table at the bottom but I have no clue if they are correct. I think they are but I could be way off. I have a logical reason for getting the answer I got but that doesn't mean I am right. I am clueless about networking and it doesn't help that my notes are shit.

Any help is much appreciated.

 

Edited November 24, 2013 by smjpl

[AtomicMaster]

http://www.9tut.com/subnetting-tutorial

 

That should make up for your notes. As far as i can see (glimpsing over) none of the answers are correct for the assignment.