Hi mozerng,
The scoring algorithm on the Official GMAT is far more complicated than most people realize - and it takes into account more than just the number of correct and incorrect answers - so thinking in terms of just how many you got right and wrong is a somewhat 'limited' way to assess your performance and Score. Here's something else to consider: how many questions did you get wrong because of a silly/little mistake? If you want to score at a particularly high level (such as 700+), then you need to keep those little mistakes to a minimum.
Before I can offer you any additional advice for your studies, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied? How many hours do you typically study each week?
2) What study materials have you used so far?
3) What "brand" of CAT did you take and what was your overall Score on this recent CAT (including the Quant and Verbal Scaled Scores)?
Goals:
4) What is your overall goal score?
5) When are you planning to take the GMAT?
6) When are you planning to apply to Business School and what Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich