Mental Calculation World Cup 2012
The Mental Calculation World Cup 2012 was held from 30/9/2012 to 01/10/2012 in the Mathematikum museum in Gießen, Germany. 32 Calculators from 16 countries participated. The World Cup involved the following 5 main contests :
- Adding ten 10-digit numbers, 10 tasks in 7 minutes
- Winner: Naofumi Ogasawara (Japan); 10 correct results in 191 seconds, world record
- Multiplying two 8-digit numbers, 10 tasks in 10 minutes
- Winner: Freddis Reyes Hernández (Cuba), 10 correct results in 361 seconds
- Calendar Calculations, One minute, random dates from the years 1600–2100
- Winner: Myagmarsuren Tuuruul (Mongolia), 57 correct results, world cup record
- Square Roots from 6-digit numbers, 10 tasks in 10 minutes
- Winner: Naofumi Ogasawara (Japan), 8 correct results (each solved, up to all the first 8 digits: 3 integers and 5 decimals)
- Cube Roots from 6-digit numbers, 10 tasks in 15 minutes
- Winner: Jan van Koningsveld (Germany), 50/80
- Most Versatile Calculator (the best score for solving another 5 unknown "surprise tasks")
- Winner: Naofumi Ogasawara (Japan), 500, perfect score.
- Memoriad Trophy winner (score from the first 4 main contests) ,
- Winner: Freddis Reyes Hernández (Cuba), 263.74 / 400
Naofumi Ogasawara (Japan) won the title in the overall competition (combination of all 10 categories). Hua Wei Chan (Malaysia) was 2nd overall, and Jan van Koningsveld was 3rd.
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