Illustrations and simple text about characters named Add, Subtract, Multiply, and the mysterious X introduce basic math concepts. Includes demonstrative puzzles. Not content to stick with science, Basher is setting out to bring some neighborliness to another tricky subject-Math. Meet Add, who just likes to bring things together, and Subtract who is a negative kind of guy. Lets not forget Multiply who is always in a rush for more, more, more. And whats with the mysterious X? As a bonus, each page has a quick puzzle to demonstrate the concept.