Math Duel
To the barrier, comrades students, as well as those who sympathize with them. A Math Duel awaits you. First, decide who your opponent is - a human or artificial intelligence? In the first case, you need to sit at the same computer. In the second, adjust the AI difficulty. Then choose a weapon: addition, subtraction, multiplication, division. You can take one thing or all together. Excellent, now you are ready for a battle of minds.