게임 소개
Answer quick addition, subtraction and multiplication problems against the clock. Right answers buy extra seconds; wrong ones cost you.
난이도: ●●●○○ 약 2분
플레이 방법
Type the answer and press Enter or Submit. Each correct answer adds 2 seconds, each mistake removes 3 seconds.
팁
- Round to tens in your head, then adjust.
- Skip nothing — a quick guess still costs less than a long pause.
- Multiplication only uses numbers up to 11.
