arithmetic
要点算数
意味
- 算数,算術
- =arithmetical
例文
He isn't smart enough to do mental arithmetic.
彼は暗算をするほど頭が良くない。
The boy can solve any problem in arithmetic.
その子は算数ならどんな問題でも解ける。
What's the difference between "maths" and "arithmetic"?
「算数」と「数学」って何が違うの？
語源
英語の原文（Wiktionary）
From Middle English arsmetike, from Old French arismetique, from Latin arithmētica, from Ancient Greek ἀριθμητική (τέχνη) (arithmētikḗ (tékhnē), “(art of) counting”), feminine of ἀριθμητικός (arithmētikós, “arithmetical”), from ἀριθμός (arithmós, “number, counting”), from Proto-Indo-European *h₂ri-dʰh₁-mó-s, form of *h₂rey- (“to count, reason”). Used in English since 13th century.