www.catchupmath.com Catchup Math  This site is targets towards at risk student's math performance.  The online programs has a cycle of quizzes, reviews and practice questions that are geared for per-Algebra, Algebra1 & 2 and geometry.  This site has quizzes, videos, activities and games to help students 'catchup'.  This site can also be used with a SmartBoard.

http://mathguide.com/  Mathguide (6-12) INTERACTIVE  This site offers puzzles, projects, tutorials and online quizzes (lessons), and a help center for middle and high school students and teachers. 

http://www.thatquiz.org That Quiz (K-12) Math test activities for students and teachers of all grade levels

www.quiz-tree.com  Quiz Tree This site has free interactive quizzes for Spanish, Elementary Math, Fractions, Geography SAT Verbal and Spelling.