Pick the operations, the size of the numbers and a time limit. You stay on a question until you get it right. If the time runs out you get a little overtime, shown in red, and at the end you see how fast you were on every question.
For division, the first number is what gets divided and the second is the divisor. Answers always come out whole.
When 30 s run out you get 15 s of red overtime (45 s in total). If that runs out too, the answer is shown and the question counts as missed.
Time's up. The answer is 376.
Seconds from showing the question to your correct answer.
Only questions you answered (in time or in overtime).
Average seconds per answered question, last 20 sessions in this browser.