🧮 Mental math trainer: 60-second sprint
Solve as many problems as you can in one minute.
Pick difficulty
⏱ 60 seconds per round
⏱ 60 s
Score: 0
🔥 0
🏁
Time is up!
Your result: 0
Best score: 0
Tip: 3 rounds a day — calculation speed grows noticeably.