足(た)し算(ざん) たしざん noun addition 1. addition (mathematical operation) The mathematical operation of adding numbers together. 足(た)し算(ざん)の練習(れんしゅう)をする。 To practice addition. この問題(もんだい)は足(た)し算(ざん)で解(と)ける。 This problem can be solved with addition. 子供(こども)に足(た)し算(ざん)を教(おし)える。 To teach addition to children. 足(た)し算(ざん) means addition (mathematical operation).WORD FORMATION:足(た)す (to add) + 算(さん) (calculation)FOUR BASIC OPERATIONS (四則(しそく)演算(えんざん)):足(た)し算(ざん): addition (+)引(ひ)き算(ざん): subtraction (−)掛(か)け算(ざん): multiplication (×)割(わ)り算(ざん): division (÷)RELATED EXPRESSIONS:1足(た)す1は2: 1 plus 1 equals 2答(こた)え: answer計算(けいさん): calculation暗算(あんざん): mental arithmetic筆算(ひっさん): written calculationCONTEXT:These terms are commonly learned in elementary school (小学校(しょうがっこう)) and used when teaching children basic math. Related Words Antonym: 引(ひ)き算(ざん) (subtraction) Related: 掛(か)け算(ざん) (multiplication) Related: 割(わ)り算(ざん) (division) general Added 2026.1.16 14:20 · Revised 2026.6.6 3:06 05000/05332_tashizan