how to solve ACE qustions?

Answer 1

You mean Accelerated Certification in Math?
Generally you need the equivalent of two years of college math, plus the degree in your field.
You'd have to pass your state's teacher exam as well, which would depend on which state you're in.
It would be good to be really comfortable with the kind of math they teach in school, at the level you're interested in teaching. So that you can answer any kind of question without getting flummoxed or just trying to write it off as a bad question.
You'd need to be thoroughly comfortable with Arithmetic, algebra, plane or classic geometry, analytic geometry, etc. Also topics that appear in state tests these days such as basic probability or counting theory.
Most of all, you need to really like and understand math. Too many people get a math certification even though they don't really understand the math, jsut because that's where the jobs are.
If you have any specific questions we can help you with them here. Right now your question is too general.