補ほ数すう演えん算ざんMeaningsNoun1. complementary operationKanji used補supplementary数number演performance算calculateComposed of補ほassistant ...; probationary ...Suffix数すうseveral; a few; a number of; number; quantity; amount; counting; calculation; figures; numbers; …Prefix演えん算ざんoperation; calculationNoun