mid-13c., arsmetike, from Old French arsmetique (12c.), from Latin arithmetica, from Greek arithmetike (tekhne) "(the) counting (art)," fem. of arithmetikos "of or for reckoning, arithmetical," from arithmos "number, counting, amount," from PIE root *re(i)- "to reason, count" (cognates: Old English, Old High German rim "number;" Old Irish rim "number," dorimu "I count;" Latin ritus "religious custom;" see read).
Originally in English also arsmetrik, on folk etymology from Medieval Latin ars metrica; spelling corrected early 16c. Replaced native t?lcr?ft, literally "tell-craft."
例文
1. They will concentrate on teaching the basics of reading，writing and arithmetic .
彼らは読書、作文、算術の基礎知識を集中的に教える。
2.The budgetary arithmetic suggests that government borrowing is set to surge.
予算数字は政府借入金が大幅に増加することを示している。
3.He 's not very good at arithmetic .
彼は算数があまり得意ではありません。
4.John was competing against James for the prize in arithmetic .
ジョンとジェームズが算術賞を競うコンテスト。
5.An educational system which fails to teach basic arithmetic is seriously deficient.