<p><b>With more than 120 fun puzzles you'll never want to put this book down!</b></p><p>From number towers to sum finders sudoku to code breakers there are so many different math puzzles in this book you'll never get bored.</p><p>The puzzles get harder as you progress through the book - can you get to the end?</p><p>Other books in this series.... <br> Brain Games For Big Thinkers (9780008503376) <br> Word Games for Big Thinkers (9780008503406)</p>