I'm taking International now, and all the math is pretty much algebra, basic stuff. I'm also taking Investments, and its the same, just algebra. Corporate doesn't seem like it'd require anything more advanced than alegbra either, but it could depend on your prof. When I took institutions and markets, there was barely any math, it was all theory, rules, history. The only math I think we used was figuring out new divisors for the indices after stock splits, etc. And if you don't have it, definatly get the BAII+. I have it, its a godsend. A prof I took has a great description of how to use it for all different problems on his website, I'll look for the link for you if yo'ure interested.