Amazing Number Crunch

Amazing Number Crunch by Hamlyn. paperback edition. ISBN: 9780600620549.

In 2004 a British newspaper added a new puzzle feature, setting off the modern Sudoku craze. In 2008, a rival British newspaper introduced NumberCrunch, setting off an entirely new numbers-related obsession. Now, these new addictive puzzles will reach American shores with the publication of AMAZING NUMBERCRUNCH, mathematical challenges that invite you to perform spectacular feats of arithmetic in under 30 seconds. Ready, set. . .add, subtract, multiply and divide. As addictive as Sudoku or Crosswords, NUMBERCRUNCH exercises mental agility while providing hours of fun for solo or group computational jousting. Just remember . . no calculators!