How to play
- 1
A math problem and four answers appear.
- 2
Tap the correct result before the timer hits zero.
- 3
Each hit raises the streak and shortens the timer; a miss or timeout ends the run.
What this test measures
This game measures mental arithmetic speed — computing sums, differences, and products under time pressure. Later streaks mix operations, so you also pick the right rule quickly.
Score guide
| Grade | Range |
|---|---|
| Calculator | 40+ streak |
| Brilliant | 30–39 streak |
| Sharp | 20–29 streak |
| Average | 10–19 streak |
| Beginner | 5–9 streak |
| Novice | 0–4 streak |
FAQ
- How is the score counted?
- Your score is the streak of correct answers in a single run.
- Does difficulty increase?
- Yes. Problems get harder and the timer gets shorter as the streak grows.
- Can I play on a phone?
- Yes. The four choices are large tap targets and fit a 360px screen.
- Is this a math exam?
- No. It is a timed practice game, not a test of school grade level.