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普段、片手で指折り数えるとき５までしか数えられないが、２進法のしくみを利用すると３１まで数えることができる。１０進法、２進法の数の表し方のしくみを考えよう。出演者　湯浅弘一　庄司浩平　宮下結衣

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数の表し方のしくみ | 数学A

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