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 1: Addition, Subtraction, Multiplication, and Division covers essential skills using all four basic bath operations and whole numbers.