About my notes in calculus=/

This last week has been interesting, I have understood pretty much to everything in math class and all the topic about integrals etc., I have done homeworks by myself and I really thought I was well prepared for the quiz.
Once I did it, I realize that I got a really stupid mistake about something that actually I know how to solve, that was polinomial division=/.
So I did too bad in my quiz, I got 50 =/=/=/, and if you add to that my other quizzes' grades (35,50) I need better numbers so far.
So next quiz I will try to be very concentrated, because I really want to get a 100!!=O
see u