Don't Leave Blanks
It's rare for tests to penalize you for wrong answers. Even if they do, if you can eliminate even one possibility, it's worth it to take a guess. If you aren't penalized for guessing, there is no reason not to answer a question. If you don't know an answer to a multiple choice question, try to eliminate possibilities and make a guess. If it's a true guess, choose "B" or "C". If it's a problem and you don't know the answer, write down everything you know and hope for partial credit.
