Tips for improving math?

<p>Hey CC,
what can I do to improve my math score on the SAT? On the last 3 or 4 practices tests that I've taken, my score for math has been stuck at around 600-640. I know a lot of people say keep doing questions, but is that all there is to it? I'm using the Gruber's book for math right now and it has helped by increasing my score 40 points. Are there any other books other than Gruber's you guys have used? And please leave some tips/suggestions! Thank you.</p>

<p>blue book and the official CB online course i guess :I</p>