The GED is absolutely a timed exam; each section must be completed in a set amount of time. To finish on time, try to average about 1 or 2 minutes per question. Wear a digital watch and set the timer on your watch as you start each section. Constantly check your watch so you know how much time you have left. If you find you are falling behind, you have no choice but to speed up. This doesn't mean you should panic or start rushing through each question; instead try to read faster and choose your final answers faster. Once you catch up, if you have time left, go back over the more difficult questions.
When taking the GED, you'll likely encounter a question you simply don't know the answer to. If that happens, study all five possible answers and try to eliminate as many answers as you possibly can. Even if you are totally stumped, you should be able to eliminate at least one choice that doesn't make sense. The more answers you eliminate, the more likely you are to guess the right one.
If you are studying 2 to 3 hours a day for the GED, you will be absorbing new or vaguely familiar facts every day. Some facts and formulas will be easier to remember than others. To ensure you can easily recall these facts and formulas on the day of the test, start applying them right away to real-life situations. Use them at the grocery store, or for computing distances, or for measuring the dimensions of a piece of furniture.