low new sat score

i just took a practice test a new sat practice test on khan academy i got a 940. i guessed on most of my math because i had too many distractions. i suck at the ACT and i dont know what to do?

It seems to me that you do not have a grasp of even the basics. First, get a really good review book and peruse through it to gain as much information as possible. Get the SAT book with practice tests made by Collegeboard itself. Next, develop your own strategy to combat the questions. This only comes though lots of practice, A LOT of practice. No one said that SAT was going to be easy. Also, try not have any distraction when you are following.