Whether you need to know what day of the week 15 - 08 - 2745 is or the 7th root of 11 the mental calcultaions experts can find the answer with no workings and no paper. This is potentially the most demanding single session in the timetable. It is likely to take at least 100% to win the Mental Calculations World Championships.
Mental calculation rules are those of standard maths test except that you are only allowed to write down the answer. No calculation devices (including phones, or watchs with calculator functions) are permitted in the playing area. It is an event that is run under standard examination conditions that there is no talking and you must be escorted to the toilet. If you leave the room (without an official esscort) you will not be allowed back in. The paper does have a small element of English but this should not disadvantage foreign competitors.
|2015||Gert Mittring||Germany||World Champion|
|2014||Gert Mittring||Germany||World Champion|
|2013||George Lane||England||World Champion|
|2012||Gert Mittring||Germany||World Champion|
|2011||Gert Mittring||Germany||World Champion|
|2010||Gert Mittring||Germany||World Champion|
|2009||Gert Mittring||Germany||World Champion|
|2008||Gert Mittring||Germany||World Champion|
|2008||George Lane||England||World Champion|
|2007||Gert Mittring||Germany||World Champion|
|2006||Gert Mittring||Germany||World Champion|
|2005||Gert Mittring||Germany||World Champion|
|2004||Gert Mittring||Germany||World Champion|
|2003||George Lane||England||World Champion|
|2002||George Lane||England||World Champion|
|2001||John R. Rickard||England||World Champion|
|2000||Robert Fountain||Wales||World Champion|
|1999||George Lane||England||World Champion|
|1998||Robert Fountain||Wales||World Champion|
|1997||K. Galle||Usa||World Champion|
Full results for Mental Calculations can be found here.