Amazon.com description: Product Description: Math problems are fun when theyre told through engaging puzzles and colorful illustrations. Number puzzles introduce readers to new, entertaining ways to practice math skills, including addition, multiplication, and division. Whether theyre finding a missing number or solving a variety of other kinds of puzzles, readers learn to apply math concepts to creative situations. The solutions to the puzzles are provided in a clear and detailed answer key. This allows readers to check their answers for themselves and discover the steps they need to take to correctly solve each puzzle.