Even if you're positive you know how to answer a question on the math portion of your GED test, making careless mistakes can cost you dearly. Scoring of the GED exam is all or nothing; you won't get partial credit for almost getting it right. Take your time. Read each problem twice. Make sure you understand what you are being asked before you begin to answer. Double-check your calculations before selecting your final answer. If you have time left over (and you have taken a paper exam), go back over your test before turning it in.
When answering complex questions that require more than one calculation, use your scratch sheet. Write down each separate question and its answer before moving on to the next section of the problem. That way, if you get the wrong answer you can go back to each specific step and find out where you went wrong. Calculating answers in your head without writing anything down can lead to careless mistakes. Perform the simple calculations first.
Before you begin your calculations, estimate what you think the right answer will be. If the answer you get is far off from your own estimate (and your answer choices), you know you're not on the right track. When choosing the right answer, eliminate the obviously wrong answers first. If you're completely stumped, choose only between the answers you think are possibly correct.
Use all the resources available to you during the math portion of your GED exam. Pace yourself. Pay attention to alerts that let you know how much time you have left. Use the scratch paper given to you. Use a calculator to save time on the portions of the exam on which it is allowed. Raise your hand quietly to ask the test moderator any questions.