【難問算数クイズ】小学生に挑戦！数理センスを問われる算数オリンピックの問題「アジは何匹？」（iq問題・脳トレ・頭の体操）
Synopsis
brain plus* チャンネル登録はこちら→https://www.youtube.com/channel/UC3l5D_jrNYyXN9JMlzAe0aA?sub_confirmation=1 算数 ...
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