Practice is key to doing well on the ASVAB. Find a quiet place and take a timed practice test. Note the sections that you have the most difficulty with and concentrate your study in those areas. You can find practice tests and study guides online (see Resources).
Familiarize yourself with the contents of the ASVAB test. The ASVAB tests your knowledge of basic biology and physical science; your ability to solve arithmetic word problems and knowledge of basic math principles; use of synonyms and how to choose the correct meaning of a word used in context; your ability to find and interpret information in a written passage; knowledge of automobile technology; familiarity with basic tools and shop procedures; and your spatial awareness.
Approach each math question by first identifying the area being tested, then listing the information, such as formulas, you need to answer the question. Solve each problem by going through the problem step by step. Familiarize yourself with all of the math topics likely to be tested on the ASVAB. These include algebra, basic geometry, fractions, factorials, how to calculate interest, patterns and sequencing and rounding.
Familiarize yourself with how to answer the multiple-choice questions to your advantage. On the ASVAB, you are not penalized for a wrong answer -- only the number of correct answers is counted. So if you do not know an answer, you should guess. Improve your chances when guessing by first trying to eliminate one or more answers you know are incorrect.
Use good study techniques. Set aside a period of time each day for studying. Make a plan for what you will study each day and stick with it. During your free time, increase your brain activity by playing chess, reading or playing a game that involves logical thinking, such as Sudoku.