このゲームについて
Answer quick addition, subtraction and multiplication problems against the clock. Right answers buy extra seconds; wrong ones cost you.
難易度: ●●●○○ 約 2 分
遊び方
Type the answer and press Enter or Submit. Each correct answer adds 2 seconds, each mistake removes 3 seconds.
コツ
- 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.
