1.
fraction; remainder; odd amount; fractional amount
A partial or leftover amount that does not form a round number, especially in the context of money, measurements, or calculations. Commonly refers to amounts below a convenient rounding unit, such as the yen below a hundred-yen mark.
端数は切り捨てます。
We round down the fractional amount.
端数を切り上げて1,000円にした。
I rounded up the odd amount to 1,000 yen.
割り勘のとき、端数は言い出した人が払うことが多い。
When splitting the bill, the person who suggested it usually pays the odd amount.
消費税の計算で端数が出た場合はどうしますか。
What do you do when a fractional amount comes up in the consumption tax calculation?
Composed of 端 (edge, fraction, fragment) and 数 (number). Refers to the inconvenient leftover portion of a number that prevents it from being round. Most commonly encountered when dealing with money — splitting bills, calculating tax, making change — but also applies to measurements and data.
In financial contexts, 端数 is handled by either 切り捨て (rounding down), 切り上げ (rounding up), or 四捨五入 (standard rounding). These are standard terms in Japanese arithmetic and accounting.
COMMON COLLOCATIONS:
- 端数を切り捨てる: to round down the fraction
- 端数を切り上げる: to round up the fraction
- 端数が出る: a fractional amount arises
- 端数処理: fractional amount handling (in accounting/programming)
SIMILAR WORDS:
- 余り: remainder — the mathematical remainder from division; more general
- 小数点: decimal point — related concept but refers to the notation, not the amount
- 半端: incomplete, odd — describes something that is not a full unit; broader in meaning