➗ Mental Math

📖 How to play Mental Math

1. Choose a level (Easy, Medium or Hard) and press Start.
2. An operation appears: type the result in the box.
3. Press Enter (or it validates as you type). If you're right, it jumps to the next one automatically.
4. You have 60 seconds. Score as many correct answers as possible.
5. Your record is saved in the browser. Higher level = bigger numbers and multiplication/division.

💡 Tip: don't get stuck on a hard operation; if unsure, estimate and keep moving.