真分数(しんぶんすう)

しんぶんすう
noun
proper fraction
academicnumbereducation
1. proper fraction
A fraction whose numerator is smaller than its denominator, so that its value is less than 1 — for example 2/3. Contrasted with 仮分数(かぶんすう) (improper fraction) in elementary school arithmetic.
3分(ぶん)の2は真分数(しんぶんすう)だ。
Two-thirds is a proper fraction.
真分数(しんぶんすう)は必(かなら)ず1より小(ちい)さい。
A proper fraction is always less than one.
分子(ぶんし)が分母(ぶんぼ)より小(ちい)さい分数(ぶんすう)を真分数(しんぶんすう)といい、小学校(しょうがっこう)で最初(さいしょ)に習(なら)う。
A fraction whose numerator is smaller than its denominator is called a proper fraction, and it is the first type taught in elementary school.

真(しん) (true, genuine) + 分数(ぶんすう) (fraction): a "true" fraction, one that really is a part of a whole.

Common collocations

  • 真分数(しんぶんすう)に直(なお)す: to convert into a proper fraction
  • 真分数(しんぶんすう)で表(あらわ)す: to express as a proper fraction

Similar words

Related Words

Compare: 仮分数(かぶんすう) (improper fraction)
Compare: 帯分数(たいぶんすう) (mixed number)
general
Added 2026.8.16 15:19 · Revised 2026.9.2 13:02
30500/30691_shinbunsuu