http://www.diigo.com/user/Gibarian/tricks Tue, 04 Dec 2007 12:43:02 -0000 Tue, 04 Dec 2007 12:43:02 -0000 http://wildaboutmath.com/2007/11/11/impress-your-friends-with-mental-math-tricks/?more <p>I'm not really a mathmagician, so that should come in handy.</p><p><strong>Tags:</strong> <a href='http://www.diigo.com/user/gibarian/impress' rel='tag'>impress</a> <a href='http://www.diigo.com/user/gibarian/math' rel='tag'>math</a> <a href='http://www.diigo.com/user/gibarian/tricks' rel='tag'>tricks</a> <a href='http://www.diigo.com/user/gibarian/tumble' rel='tag'>tumble</a> </p><p><strong>Posted by:</strong> <a href='http://www.diigo.com/user/gibarian'>gibarian</a></p> Tue, 04 Dec 2007 12:43:02 -0000 http://www.instructables.com/id/EUO2ZWGMX3EQEC14US <p></p><p><strong>Tags:</strong> <a href='http://www.diigo.com/user/gibarian/card' rel='tag'>card</a> <a href='http://www.diigo.com/user/gibarian/howto' rel='tag'>howto</a> <a href='http://www.diigo.com/user/gibarian/magic' rel='tag'>magic</a> <a href='http://www.diigo.com/user/gibarian/tricks' rel='tag'>tricks</a> </p><p><strong>Posted by:</strong> <a href='http://www.diigo.com/user/gibarian'>gibarian</a></p> Mon, 07 Aug 2006 10:26:29 -0000 60