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26.04.2012 New claim submitted for Running a Marathon while Hula Hooping 26.04.2012 New claim submitted for Solving Rubiks 4 x 4 x 4 cube 26.04.2012 New claim submitted for Nordic Walking, 6 Hours Keywords: (e.g football beer mat)	Listed below are the verified claims for the record listed. Adding ten 10-digit numbers - Current world record 1. Marc Jornet Sanz (Spain) solved ten mental calculation tasks of the type "add ten 10-digit numbers" without an error in 3:19.42 minutes on 23 September 2010 at the Mathematics Faculty of the University of Valencia, Spain.   Previous verified claims 1. Alberto Coto (Spain) solved ten mental calculation tasks of the type "add ten 10-digit numbers" without an error in 3:42 minutes at the Mental Calculation World Cup 2010 on 7 June 2010 in Magdeburg, Germany. 2. Ramon Abella Villa (Spain) solved ten mental calculation tasks of the type "add ten 10-digit numbers" without an error in 4:02.9 minutes at the Impossibility Challenger Games on 21 June 2009 in Dachau, Germany. 3. Alberto Coto (Spain) solved ten mental calculation tasks of the type "add ten 10-digit numbers" without an error in 4:26 minutes at the Mental Calculation World Cup 2008 on 1 July 2008 in Leipzig, Germany.     The Book of Alternative records - World records, record breakers and more!