Came across this Finquiz Level 1 formula PDF online and thought I'd share....it looks pretty good, and I'm sure will be helpful in the run up to December!
http://www.finquiz.com/blog/wp-content/uploads/2015/10/l1formulasheetdecember2015.pdf
http://www.finquiz.com/blog/wp-content/uploads/2015/10/l1formulasheetdecember2015.pdf