Number Power Series (Revised) 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: PRE-ALGEBRA NEW! 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.Robert Mitchell is the author of 'Contemporary's Number Power: A Real World Approach to Math : Pre-Algebra' with ISBN 9780809223879 and ISBN 0809223872.