<p>Mmm… I’m not sure if prep books will easily improve your score from 2100. One possible option is to sign up for Kaplan’s Free QuizBank (go to kaptest.com). And whenever you do math problems, set the difficulty level only on “hard” so you only get to see “hard” math problems.</p>
<p>But really, SAT math section is one section that you know exactly what to expect. This is why I’m against SAT prep workout books for math because if you prepare with CB’s blue book and do tons of practices which are available online, you should do fine. Seriously, if you want to get perfect score on math section, do about 500 math problems. You should be good to go and I’m not kidding when I mean about 500 math problems. By doing that much, you’ll be used to basically every type of math problem you’ll encounter.</p>