by StaceyKoprince Tue Sep 30, 2008 6:00 pm
The challenge problem banks are mostly 800+ problems - in other words, harder than things you'd see on the official test. It is absolutely NOT necessary to do these in order to score a 700 (in fact, I generally tell my students to avoid them unless they are already scoring in the 99th percentile in math and they're bored by all of the other material)!
Stacey Koprince
Instructor
Director, Content & Curriculum
ManhattanPrep