Subtraction

A Question of Math uses a recurring cast of young, multiethnic characters along with a mathematical creature called Digit to introduce young readers to fundamental math concepts -- including subtraction, division, multiplication, addition, counting, and measuring -- that they can find at school, play, and home. With a clear, straightforward question-and-answer text, lively illustrations, and simple problems (with answers) for readers to try, the A Question of Math books provide an accessible and entertaining introduction to math.