Even though the current CBT GRE makes no provision for you to cross out incorrect answers choices on screen, you still can eliminate answers you know are wrong before guessing which of the remaining answer choices is correct. This is where your scratch paper comes in. During the untimed computer tutorial session, take a few minutes to write out a rough, scratch-paper answer sheet for each answer sheet as your guessing guide. Before you guess, are sure are wrong. Then choose between the answer choices that are left. You'll increase your chances of coming up with the right answer by making this sort of "educated" guess.

Make sure of your scratch paper throughout the test. In the verbal section, jot down key words or phrases from the reading passages. On the mathematics questions, use your scratch paper to draw daigrams and, of course, to do all of your calculations.