I recently took the SATs and got my scores. I got a 550 in reading, 670 in math and 640 in writing. I want to improve my scores next time so all 3 will be in the 600s and maybe in the 700s.

I think my weaknesses are in sentence completion, improving sentences, and finding sentence errors. Does anyone have any tips on how they remember certain grammar rules?

Also on reading passages, I find myself thinking too much into the question which causes me to misinterpret what question/choices and get the question wrong. I don't think there are any tips to fix that, but if there are I'd be glad to hear them.

Thank you for any help you can provide me.