How it works
Practice addition that gets harder only as you get better — start with tiny sums and gradually work up to bigger numbers.
- Levels. There are 10 levels. The first ones add just a tiny number (1-2, then 1-4) to a small number; later levels grow toward two-digit sums.
- The green dots ●●○○○ show how many correct answers in a row you have. Get 5 in a row to reach the next level.
- A wrong answer resets the dots — the streak has to be unbroken. The correct answer is shown so you can learn it.
- Too tricky? 3 wrong answers in a row drops you back to an easier level.
Your stats: Score is the percentage of answers you've gotten right, Tasks is how many you've tried, and Correct is how many were right.
Progress is saved on this device, so you can close the page and pick up later. Reset progress starts everything over.