有ゆう理り数すう

noun

rational number

Mathematical term for a number that can be expressed as a fraction of two integers.

• 有ゆう理り数すうは整せい数すうの比ひで表あらわせる数かずです。

  A rational number is a number that can be expressed as a ratio of integers.

• 0.5は有ゆう理り数すうです。

  0.5 is a rational number.