March and the awards were presented at the Sydney Opera House to the Champions. In 2015, there were participants from 150 countries. US, UK and Australia all had over 1 million registrations. The 2019 World Maths Day event was combined with a social media competition, where students around the world were encouraged to dress up in a maths-themed outfit to celebrate maths. Entries included famous mathematicians, an aerial shot of students forming a pi symbol, and human calculators. In 2022, World Maths Day celebrates 15 years in the making. Awards A number of awards are offered to the students who take part and for those who do well in the event. Additionally the champions and the top ten students in the world are awarded gold medals every year. There are also a number of national lead-up events in different regions around the world which are also based on the Mathletics format. Champions The individual gold medal winners through the years are listed below: 2007 Results 2008 Results 2009 Results 2010 Results 2011 Results 2012 Results 2013 Results 2015 Event The 2015 event was held on October 13-October 15, 2015. There were 10 ages categories: 1 each for grades K-8, and one for grades 9+. The game limit was dropped to 20 games per student. It is possible to play further, but these do not count to ones personal total, only the event total. 169 Million points were scored across Maths, Literacy and Science. Official National Mathletics Challenges leading up to World Maths Day Throughout the year Mathletics host several National Mathletics challenges in the lead up to World Maths Day. These challenges and the winners list are as follows: 2010 Results The American Math Challenge :Winner- Alek K, Haddonfields schools, Null. The Australian Maths Challenge :Winner- Parker C, Home Education, Queensland The Canadian Math Challenge :Winner- Shekar S, North Kipling Junior Middle School, ON. The European Schools Maths Challenge:Winner- Anna S, British International School of Ljubljana, Slovenia. The Middle East Schools Maths Challenge:Winner- Zakria Y, Australian International School, UAE. The NZ Maths Challenge :Winner- Vlad B, St Mary's School, Christchurch. The South African Maths Challenge :Winner- Jaden D, Wilton House, GT. The UK Four Nations Maths Challenge :Winner- Sharan Maiya, Glasgow Academy, Scotland. 2011 Results The American Math Challenge :Winner- Sayan Das, Team USA, Minnesota. The Australian Maths Challenge :Winner- Tatiana Devendranath, Team Australia, VIC. The Canadian Math Challenge :Winner-