Speed in mathematics is actually an important measure of how well we understand the subject. In the working world, doctors, police officers, and airplane pilots all have to make fast, accurate decisions. The writing you did on the test probably did not take more than about ten minutes, so we have to ask how the rest of the time was spent. Perhaps you are still feeling your way over subject matter that requires a quick reaction. Do you write a lot in hopes of partial credit? A practical suggestion is to browse through the test, allot your time, and simplify answers last. Read the directions carefully, limit answers to precisely what is asked, and always check your work line by line, to avoid going off in disastrously wrong directions.