<p>Practice until the skills come easy. Also, practice will make you quicker with the easier questions and leave you time for the hard ones. Practice took me from a starting point of 68 PSAT math to a 720 on the SAT, to a 780.</p>
<p>I wouldn’t call it luck, though. There’s a chance you might know some questions better than others, but a really good SAT math person will consistently get a high score, even consistently 800 if they’re good enough at it.</p>