Physics. Chemistry. Math. Help?

<p>Hi.
I took the SAT subject test earlier this month on the 7th. It was my first attempt and I took only chemistry and math.
I prepared for both the subjects from Barron's. When I took the Diagnostic test in Barron's (which is nothing but a test you take to determine where you stand before you start preparing) I scored 680/800 which was pretty decent considering it to be my first time that too without preparation.</p>

<p>I haven't received my education in the States. I'd studied everything in the SAT Chemistry test syllabus thoroughly in school itself so I going through Barron's was Nothing but revision.</p>

<p>I took a lot of practice tests from Barron's and usually scored a 720. And it's commonly said that you score slightly more than what you score on the Barron's practice tests.</p>

<p>So, I gave my test. How much to I get? 670. So much more less than what I got on the Diagnostic test!</p>

<p>The one place I faultered was time management. I did not realize how crucial time was. While taking the practice tests I was so focused on judging my level of understanding of the course that I neglected time & hence ended up skipping almost 15 questions in the test.</p>

<p>So, my question to you after all this eloquent blabber is, what should I do to push my score beyond 750 in Physics, Chemistry and Math?</p>

<p>I scored a 640 in math by the way. Time got to me.</p>

<p>Your help is much appreciated. Thankyou. :) </p>