Math Medics
S.o.s. Math: Simple Fractions
This S.O.S. tutorial gives students a basic review of simple fractions. Follow the tutorial to refresh your skills involving simple fraction manipulations. Each section contains problems with links to the answers.
Wyzant
Wyzant: Simplifying Multiple Signs Worksheet
Dealing with multiple positive and negative signs in an algebra equation can be a challenge for some students. This inter-active quiz from WyzAnt provides 20 multiple-sign equations and their answers for students to test their knowledge.