World Maths Day 2008

World Maths Day 2008 is a free web-event where kids from six to 16 years old can compete in live competitive challenges with other kids from around the world in answering mental arithmetic questions.There are currently more than one million kids already registered from 150 countries to participate in the maths day.Questions set come under four categories: addition, subtraction, multiplication and division. In each game, the student has one minute to answer as many of these questions of a random category as they can (chosen per game, rather than per question). Each question is limited to two numbers of one or two digits; addition and subtraction have only single digit second numbers and all division results are integers.