Hi hsn81960,
Many Test Takers become too fixated on the 'implied level' of the questions that they're working on - instead of what really matters: defining WHY they're getting questions wrong and becoming more efficient at approaching the overall Exam. In simple terms, there's a big difference between getting a question wrong because you made a little mistake and getting one wrong because you genuinely do not have the knowledge to answer it. You mentioned that when you read the solutions to certain questions, those solutions 'makes sense.' This implies that you have more knowledge than a 370 implies you have - but that you are probably disorganized with your work and not approaching questions in a logical way. Thus, beyond making sure that you know all of the necessary formulas/patterns/etc., you also have to train to take notes, use Tactics, etc. in an efficient way.
Before I can offer you the specific advice that you’re looking for, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long ago did you take the Official GMAT and how long have you studied in total?
2) What study materials have you used so far?
Goals:
3) What is your overall goal score?
4) When are you planning to retake the GMAT?
5) When are you planning to apply to Business School?
6) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich