I think it's all about how much you practise
Well, I just took my Calculus 2 test, and didn't finish (got about half way through). I know I got all the ones I did complete right, but I guess there wasn't enough time (for me anyway).
Could anyone tell me how to improve my math skills so I can finish these tests in time? In other words, what's the meaning of life?
P.S. : No part of the test were multiple choice
When you're in a test, I'd strongly suggest you read the whole paper first, even if you lose 5 minutes (not 1 hour lol !), this gives you a good overall sight of what you will have to do. And maybe you'll be able to know which are the ones you're sure you'll go straightforward and lose less time on the ones you're stumped on =)
One thing that helped me was to look at how many marks the question is worth. It's tempting to start a question with the first method that pops into your head, but this can waste valuable time as another method can be a lot easier.
It works on the idea that longer methods (eg. parts, substitution using trigonometry, reductive formulae) get more marks than shorter methods (eg. "easy" substitutions).
It also helps indicate if there's a shorter way of "tidying up", for example expressions for sinh x can be used to find expressions for cosh x using cosh^2x-sinh^2x=1.