I scored a 410, which is really sad. Are there strategies to use for the SAT math section? I’m good at math, I know how to do math. But I don’t know how to pull out information from SAT-type of word problems and set up equations. There’s a lot of confusing unnecessary info that the SAT uses for its math section.
I’m very sorry to hear that.
I’d suggest Khan Academy because it will identify your weaknesses and generate practice problems. In the end practice and familiarity will get you a good score.
Onto actual tips:
1)Every time I see a number as I read the question I write it down. Familiarity allows me to start ordering the numbers into an equation. Using this method, I’ve actually arrived at the answer before I got to the part asking me for the answer.
2) Eliminate. And keep eliminating. Some people think it’s better to be able to solve the problem and that way is quicker, but sometimes a cursory look at the solutions will show you that some answers are just plain wrong. The math portion tends be nice in that way because for most problems there are two that are super wrong. And a couple will have three answers that just don’t make sense.
3) Don’t know the answer immediately? Guess and move on. I star questions on the answer sheet so when I have extra time I go back and check these questions.
4) For word problems circle the intended solution. The SAT loves tricking you into solving for the wrong problem.
5) Don’t be afraid to cheat. Actually… amend that. Don’t cheat cheat, but short cuts are you friends. Plug in a number instead of doing the work. Use that function on your calculator. Or… Use calculus because your brain forgot that section of algebra. On a related note:
6) Don’t forget your calculator. It’s nerve wracking and makes you be distracted. How do I know that? On the last SAT I forgot my calculator. 
There’s always that one problem that is rather computation heavy and you definitely want a calculator that can at least multiply large numbers for you.
Hope that helped. If you want more specific advice it’d help if you mentioned the type of problems you got wrong, your highest level of math, grade, and how much time you spent on the section (Did you have extra time or did you run out)?