I'm currently taking Calculus 2 class and really enjoyed it. I changed my study habits in math because I want to get an A+ on it. I practice indefinite and definite integrations problems everyday for my first exam. I answered most of the questions on my book and some problems I found on the internet, but still didn't get an almost or much better a perfect score on my first exam. The problem is that when I'm already taking the exam already. I don't have any problem when I'm practicing. Last exam, I feel so weird... it looks like everything is moving fastl. Then after few minutes solving all the questions on the exam, I noticed that I finished it for only 25minutes. So I checked again my answer then I found few errors with signs and fractions. So I changed everything then pass the paper already. Then the next meeting, I only got a B+. :'( I don't know what's the problem, I sleep 8 hours a day which is the right amount, practice very well and didn't find any problem with me. Can you tell me what's the problem with me?