Thanks for the info ladies. I guess I wasn't clear in my post that I know how to do the math, I'd forgotten the "rules", (invert to divide) that's the reason that I've been studying. What I was concerned about is if there is algebra. Also on some test, if you leave an answer blank, they don't count it against you and on other tests, they say you should go ahead and guess as a blank answer will be counted wrong.. Anyway, wish me luck and again thanks for the input.