demo

There are 100 questions each from level 1 to level 10, for a total of 1000 questions of reduction waiting for you.
Improve your calculation skills quickly with a game-like experience!

  • Special Page

    • レベル1からレベル10までそれぞれ100問、全部で1000問の約分の問題があなたを待ち受けます。
    ゲーム感覚で素早く計算力を向上させましょう！

  • 特設ページ

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