Also other tips from Princeton Review:
-In the verbal sections, pretty much immediately cross out choices that are extremes, like "Jill always loved her mom." Can't remember why ATM, but basically the test writers don't write in black and white. Buy and read Princeton Review if you want to know why (read it anyways).
-Statistically, very large values and very small values relative to the other choices are more often not the answer. So this means if you've got a choice between B,C, and E, you should choose B or C. Coupled with even a slight understanding of the math problem, you probably won't be chooseing between more than three possibilities.
-There are varous mathematical tricks the PR can teach you that can save you 35-45 seconds on any given math problem. I only found 2 of their tips to be useful, but if you gain an extra minute, that's a whole minute you have extra to work more problems or double check for mistakes
-After each question, circle the answer that you think is correct, and move on to the next question. Wait till the end of the page to bubble in all the answers for that page. This saves you from finding where to bubble in more than about 10 times. Of course pay attention to the time and don't do this when you're running out of it.
-If you know the math you'll be tested on, drink some caffiene before testing, and after a break if you can. If some of it is fuzzy, don't, because this will make you second guess yourself too much than is good (makes you more nervous). Bring some carbohydrate munchies for in between, even if you're not hungry. This will keep your brain fed.