Try Math for gifted kids. It's available in Barnes and Nobles. Try 3rd graders 1st. The format is random but challenging and fun for Mathy kids.

14 Composite for 3rd grader is a pretty good score. She could improve reading by unlimited visits to the public library :-). The kids improve the comprehension if you ask them to write a brief summary after every few chapters. I wish they make STAR AR(reading test) available commercially to parents instead of just the schools.