Mental maths game for two players to play online, or two-player mathematical competition, an online game of competing in mathematical calculations with basic operations. Players face each other to answer the result of mathematical operations, and the winner is the one who answers the question correctly first. Add, subtract and multiply. You can decide to use a calculator but the rules of the mathematical competition must be the same for both participants in the contest of performing operations. Also available in single player mode, to train doing math calculations online. Choose in the settings the operations (addition, subtraction, multiplication and division) to perform, and the difficulty level (low, medium, high).