Test taking with math topics takes practice, practice, practice. The best way to improve your scores in an inexpensive way is to practice problems. Open a math book and do the odd exercises with the answers in the back of the book to check your work. There are practice tests for free online: Google math test prep, or other similar titles. Tutors can help too, but only if you want to work hard to learn the different patterns of problems and approaches for solving them.