割り算・わり算・割算|わりざんwarizan[2]nakadaka (mid-high)

JLPT N2approx.Common
Which spelling to use
割り算割り算 is the most common written form and the recommended choice for beginners. It combines kanji and kana.
わり算わり算 is less common than 割り算. It is another written form combining kanji and kana, so learners may encounter it as an alternative.
割算割算 is the least common of the three written forms. It is written entirely in kanji and is a less common alternative to 割り算.
Definitions
  1. noun, suru verb, transitive verb, mathdivision
Conjugation
Dictionary form割り算する(わりざんする)
Polite (masu)割り算します(わりざんします)
Negative (nai)割り算しない(わりざんしない)
polite (masen)割り算しません(わりざんしません)
classical zu / nu割り算せず・割り算せぬ(わりざんせず・わりざんせぬ)
Past (ta)割り算した(わりざんした)
polite (mashita)割り算しました(わりざんしました)
Past negative (nakatta)割り算しなかった(わりざんしなかった)
polite (masen deshita)割り算しませんでした(わりざんしませんでした)
Te form割り算して(わりざんして)
Potential割り算できる(わりざんできる)
Passive割り算される(わりざんされる)
Causative割り算させる(わりざんさせる)
Causative passive割り算させられる(わりざんさせられる)
Conditional (ba)割り算すれば(わりざんすれば)
tara割り算したら(わりざんしたら)
Volitional割り算しよう(わりざんしよう)
polite (mashou)割り算しましょう(わりざんしましょう)
Imperative割り算しろ(わりざんしろ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym除算じょさんWrittenWritten, mathematical term for the division operation; 「割り算」 is the everyday word used in daily life and at school.
  • Synonym除法じょほうWrittenA written, mathematical term for division; it comes up less often in practice than everyday 「割り算」.
  • Related割るわるNeutralVerb meaning to divide, as in 「10を2で割る」; it also means to break, split or cut something.
  • Related除じょWrittenWritten-style word for division, seen mostly in compounds such as 「加減乗除」 rather than on its own.
  • Antonym掛け算かけざんNeutralMultiplication, the operation opposite to 「割り算」.

Use 「割り算」 in everyday speech and elementary math. For mathematical or written contexts choose 「除算」 or 「除法」; 「除」 appears in compounds like 「加減乗除」. Say 10を2で割る with the verb 「割る」, and use 「掛け算」 for multiplication.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese definitions
  1. 指定していの数かずとある数かずを掛け算かけざんし、もう一ひとつの指定していの数かずを得うるには、ある数すうはどんな数かずであればよいかを計算けいさんすること。除算じょざん。除法じょほう。前まえの指定していの数かずを「割わる数すう」、後あとの指定していの数かずを「割わられる数すう」という。
  2. 割り算わりざんを行おこなう。
Kanji in this word

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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