真しん分ぶん数すう

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Meanings

1

proper fraction

Mathematical term for a fraction where the numerator is less than the denominator (e.g., 1/2, 3/4).

真しん分ぶん数すうは、分ぶん子しが分ぶん母ぼより小ちいさい分ぶん数すうです。
A proper fraction is a fraction where the numerator is smaller than the denominator.