But you said you didn't do so well on the 200+ questions.
I think to really do well, you need to
focus on the last 50 or so problems. Those are basically the tough questions you are going to face on the test. The first 100 are basically very simple and almost a joke. I don't even know why they have them, maybe to reflect all the different difficulty levels?? But I don't think you would see many if any of these questions unless you are doing terrible on the math section.
To be able to score 40+ on math, you need to be able to answer all the questions 200+ AND more importantly understand the concepts you are being tested. For example, just one thing I have noticed, on the tough geometry questions, you sometimes have to manipulate the diagrams they give you. If they have a circle inside a square, you usually have to picture/draw out triangles to get radius or diameter or side of the square(knowing special right triangles helps)....and so on. So they basically test your knowledge of circles/squares/triangles all in one question.