割り算 わりざん Also written わり算, 割算 Meanings Noun, する verb, Transitive division Kanji 割 divide. Read as わり. 算 calculate. Read as サン. Example sentences 何らかの数字をゼロで割り算すると未定義の解になる。The result of dividing any number by zero is undefined. Word lists JLPT N2 Mathematics Jinuma: Japanese Dictionary · Word lists