Number Power is the first choice for those who want to develop and improve their math skills. Every Number Power book targets a particular set of math skills with straightforward explanations, easy-to-follow, step-by-step instruction, real-life examples, and extensive reinforcement exercises. Use these texts across the full scope of the basic math curriculum, from whole numbers to pre-algebra and geometry. Number Power 10: Pre-Algebra: from basic number skills to data analysis and probability and on to beginning algebra, this book covers material necessary to pass many educational and occupational tests.