四捨五入
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Noun meaning 'rounding up' in mathematics. Used to describe the process of rounding numbers to a specified place value, where digits 0–4 are rounded down and 5–9 are rounded up. Example: 『四捨五入する』 (shishagonyuu suru, 'to round up') as a suru-verb.
Theme
In a math tutoring session, User asks their teacher, Mr. Tanaka, for help with rounding numbers in a homework assignment.
四捨五入
ししゃごにゅう
rounding up (fractions)
Numbers & CountingFractions & Decimals
Memory Hook
Imagine a number line where you 'round up' numbers: if the digit is 4 or less, you '捨てる' (suteru, 'discard') it; if it's 5 or more, you '入れる' (ireru, 'include') it by rounding up. 'Four discard, five include' → 四捨五入 (shishagonyuu, 'rounding up').
Cultural Note
In Japan, 『四捨五入』 (shishagonyuu, 'rounding up') is commonly taught in elementary school math and used in everyday calculations like pricing, statistics, and measurements to simplify numbers.
Forms
Base: 四捨五入Noun meaning 'rounding up' in mathematics. Used to describe the process of rounding numbers to a specified place value, where digits 0–4 are rounded down and 5–9 are rounded up. Example: 『四捨五入する』 (shishagonyuu suru, 'to round up') as a suru-verb.