How quickly can you find the missing value? Welcome, brave math wizard, to the world of area mazes! These clever arrangements of squares and rectangles are more than meets the eye. Can you find your way from the given values to the missing one marked “?”—using only your powers to add, subtract, multiply, and divide with whole numbers? Too easy? Race the clock! Puzzle master Naoki Inaba has included a “good,” “great,” and “amazing!” time target for every puzzle. But be warned . . . the puzzles get harder and harder as you go!