This is a two-sided formula bank that includes all the major area, volume, and surface area formulas. It also includes formulas for slope, distance, slope-intercept form of line equations, and simple interest.
I laminated copies of this and use it in the classroom as an easy to read reference for my students. It reduces flipping through books and frustration when trying to find the correct formula.
Prealgebra Formula Bank is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License