noun, noun which may take the genitive case particle 'no'
fraction; odd amount; leftover amount
Refers to a small remaining amount, often a fractional or odd sum, especially in calculations, payments, or measurements.
端数を切り捨てて計算する。
Calculate by rounding down the fraction.
支払いの端数を調整する。
Adjust the odd amount of the payment.
rounding; fraction handling
Compound of 端 (ha, 'edge' or 'fraction') and 数 (suu, 'number'). The exact historical derivation is uncertain, but the combination naturally conveys a fractional or leftover number.