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Divesh R. Shah (born 1968) is an Indian mental calculator He can easily: * Multiply two 8-digit numbers in one step. * Add 20 numbers in just 5 seconds. * Square any 5-digit number. * Extract square roots and cube root Srilanka school mathsshow.jpg Singapore school mathsshow.jpg London school mathsshow.jpg Calculation worldcup germany.jpg Bangkok school mathsshow.jpg Sudoku show.jpg Audience at mathsshow.jpg Certificate at mmc world cup.jpg India Team.JPG Mental maths competition.jpg Mmc award function.jpg He came up with an idea of presenting the numbers to audiences in the form of a stage show named "The Maths Show". The first performance took place in Mumbai at Zaverben Hall, Ghatkopar, on 7 September 1998. An attempt to popularize mental mathematics, "The Maths Show" has been performed over 400 times around the world. His Sudoku shows were also popular in India. Shah received queries from parents to make mathematics interesting for their children. The parents wanted to learn more easy-calculating techniques for their children, which resulted in "The Maths Show-Part II- for kids" covering more topics in working with large numbers. Shah lives in Singapore. His company in India Global Maths Science Education provides its services to more than 2000 students every year "Mental Maths Competition" is his initiative to encourage mental maths among young minds and to provide a platform to students for showing their calculation skills. Each year around 5000 participants from different schools in Mumbai participate in the event. == References == *( Vedic Mathematics for Mental Maths ) * (''The Maths Show'' ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Divesh Shah」の詳細全文を読む スポンサード リンク
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