I have to chose something soon...

I have my 2 year college (the cheep stuff) courseload pretty much set. Gen ed, with focus on Math and Science (which is what my major will end up being in).

My plan is to transfer and major in Physics, or possibly Chemistry. I want to keep my options open for a possible major in Mathematics (and/or double major/minor in such things), but it requires either overloading my schedual for a term or taking a class in the summer in order to take all the classes I need to get the neseccary classes that a junior at my college I'm transfering to (UNI) would need to have in order to get the string of classes in (with pre-req and co-req and whatnot) within two years (I don't want to spend more than 4 years in undergrad school unless I ABSOLUTLY have to).

So, you Math people, what all can someone with a math major do? (obviously a lot more than I realize)

And you physics/chem people, what kind of advantage of a double major in math (or just a massively more extencive background in math than required) help if I was a physics/chemestry major?

I probably will go on to grad school, but I haven't really decided on that yet. I'm gonna see what happens then...

Anyway, any answers anyone can give me would be appreciated.