Very good point you've made Feralis about skipping the problem after 10 seconds. How exactly do you do that? I mean... 10 seconds is extremely short time, and a lot of these DAT questions take more than 10 seconds to really understand the question, at least for me...
And lucensdentium, I want to say... you are fine. I would not stress about getting high score on math, even though it is better to get a higher score, a lot of schools do not focus on math score as much as sciences and RC sections. Also, Idk if you've gone over this already, but I found Chad's math section extremely helpful. I'm sure you get stuck on certain type of question. Find those type of questions and go take chad's math quizzes.