Advanced SAT Math Strategies for those that want an 800 in math

Would you recommend these strategies for the new SAT? My daughter got. 640 on the math part of the October PSAT without studying. She has since reviewed some of her older math, she is in AP Calc currently. Would these strategies help her for the new SAT? Also, what about your beginning and intermediate lessons?
These are her scores from the recent ACT: Mathematics 26
  Pre-Algebra/Elem. Algebra 15
  Algebra/Coord. Geometry 12

  Plane Geometry/Trig. 14
Thanks for your advice. Her reading and writing scores are much higher so she wants to bring her math up to those levels.