負(ふ)の数(すう)

ふのすう
noun
negative number
1. negative number
A number less than zero. Used in mathematics and science contexts.
マイナス3は負(ふ)の数(すう)だ。
Minus 3 is a negative number.
負(ふ)��数(すう)と正(せい)の数(すう)を足(た)す。
To add a negative number and a positive number.
中学校(ちゅうがっこう)で負(ふ)の数(すう)の計算(けいさん)を初(はじ)めて習(なら)った。
I first learned calculations with negative numbers in junior high school.

A basic mathematical term introduced in Japanese junior high school (middle school) math. In the Japanese curriculum, negative numbers are taught in the first year of 中学校(ちゅうがっこう).

RELATED TERMS:

  • 正(せい)の数(すう): positive number
  • 整数(せいすう): integer
  • 自然数(しぜんすう): natural number
  • 絶対値(ぜったいち): absolute value

FORMATION:
負(ふ) (negative, minus) + の (possessive particle) + 数(すう) (number)

NOTE:
In everyday speech, マイナス (minus) is more commonly used for temperatures and financial losses, while 負(ふ)の数(すう) is specifically the mathematical term.

general
Added 2026.4.6 1:27
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