Train your memory. Geheugen trainer.

Author:Jan Elemans

Druk op start. De klok loopt 10 seconden. Beantwoord daarna de vraag. Succes! Press start. The clock runs for 10 seconds. Answer the question. Good Luck!

Let goed op. Is erg lastig! Is very challenging!

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apec
探究長方形對角線上的正方形數目
Untitled
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以百分數比較兩個數值

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Bài tập 1b trang 71

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