Register for the test online, by phone, by mail or by fax as soon as you decide to take the test. Give yourself at least three months for exam preparation.
Complete online Quantitative Section sample tests. Many are available for free, and completing one or more will help you assess where you need to focus your efforts.
Join a study group or GMAT exam preparation class. Talk to your local university for help in finding a group or go online and find an e-class.
Get your rest. Sleeping and eating well before you test will help you concentrate during the exam.
Review your high school math. You will need to know basic arithmetic, averages, fractions, decimals, algebra, factoring and geometry for the Quantitative Section of the GMAT.
Memorize your answer choices. The Data Sufficiency questions, the first half of the Quantitative Section, all have the same four choices of answer. If you have your choices memorized, you will be able to use your test time more effectively.
Use the process of elimination when answering the questions. Eliminating either of the statements in the question will limit your answer choices.
Polish your problem solving skills. The second section of the GMAT Quantitative Section, Problem Solving, is looking for correct answers to math problems.
Practice solving problems in arithmetic, algebra and geometry.
Study the math facts and formulas you learned in high school. You will need these at your fingertips to get through the exam in the allotted time.