SAT score significantly lower than practice tests.

<p>I orginally got a 192 on my psats however i have since studied alot for the march sat. I also took 4 practice tests leading up to march from the blue book and got consistently in the 2100 range CR-750 Math-680 and writing -730. However I just got my scores back and was shocked to see that I got a 1940. The math section was significantly worse however I expected this because I found it very difficult and not very simular to the math section in the blue book . More troubling though was my 660 in CR. This SAT score may just be because it was my first time and I was extremely nervous. In which case I can take it again in may and score a 2100 however if not what went wrong and how can I ensure that this wont happen again?</p>