Reviews Math BOOK LIST | Guesstimation: Solving the World’s Problems on the Back of a Cocktail Napkin Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Science News May 12, 2008 at 7:20 pm Learn to use simple arithmetic to approximate anything.Princeton Univ. Press, 2008, 300 p. $19.95 GUESSTIMATION