Hi KomalSg,
With those practice results, you clearly have strong Quant critical-thinking skills. The difference between your performance on Test Day and your practice performances could be due to a variety of different factors - and many of those factors are a measure of how realistically you were practicing (including if you took those CATs more than once or saw any of those Quant questions during your practice and before you took those CATs). 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 have you studied?
2) What study materials have you used so far?
3) How have you scored on EACH of your CATs (including the Quant and Verbal Scaled Scores for EACH)?
4) How did you score on the Official GMAT (including the Quant and Verbal Scaled Scores)?
Goals:
5) What is your goal score?
6) When are you planning to retake the GMAT?
7) When are you planning to apply to Business School?
8) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich