These sensational new math puzzles are packed with lost, hidden, and missing number challenges that will have you searching the outer limits of your imagination. All will test your I.Q.--and patience. However, you don't have to be a math genius to solve them. Most just ask you to apply basic addition, subtraction, multiplication, and division--they're intended to trick your thinking, not your math. So come on in, and play your way through dozens of magic squares, mazes, devious dissections, logic problems, weight and date puzzles, coin and matchstick maneuvers, and numerical word games. 96 pages, 130 b/w illus., 5 3/8 x 8 1/4.