Kinda freaking out about subject tests...

<p>So, I have to take 3 subject tests on Sat. and I'm kinda freaking out about them. I have not studied till now, really, which I'm regretting. I'm taking math 2, french, and us history. I just did the barron's diagnostic test and got like a 640, I think, which freaked me out. I'm really tired today I guess, and I know that's not completely terrible but I want at least a 700 or 750. There are some things we never learned in precal that were on it though- is this true for the real test or does barron's include unnecessary material? For US history I don't have any sat 2 books, but I have everything I studied for the AP test. For french I have the Princeton Review book. I really really want to do well because I just got a 2300 on my first sat and I don't want this to mess it up! I know some colleges accept score choice, but I don't want to do badly for those that don't... I don't see myself having much time to study this week either because of other work I have to do! I'm kind of ranting, I'm sorry, but would it be smart to cancel one or more of these? Should I save them for fall?
Also, could I look at the test on test day and then decide whether to take it or not?</p>

<p>barron’s math really can destroy one’s confidence, at least for me. But when i done the question from the official guide, i found out it was not that scared at all.</p>