Pace yourself. If you find you are taking too long on a problem, skip it for the moment and come back to it later.
Answer all the questions you are sure of first.
Read all the instructions carefully. It is important to know exactly what is being asked, so you avoid confusion or mistakes.
Use common sense when answering problems.
Take a quick look at the answers after looking at the problem. Eliminate any answers right away that are completely out of range. This will leave you fewer options to choose from, increasing your chances of getting the correct answer.
Make sure you understand what the question is asking. Some problems will have unnecessary information.
Go with obvious answers and your first instinct. Do not second-guess yourself!