How to say "arithmetic" in Japanese

Choosing the right word
  • 算数さんすうJLPT N2approx.Common
    nounArithmetic as the elementary-school subject: basic calculation with numbers. This is the word you want when English 'arithmetic' means doing sums, as opposed to mathematics as a discipline.
    算数さんすうは数すうを取り扱とりあつかう。↗
    Arithmetic deals with numbers.
  • 数理すうりCommon
    nounDespite the gloss 'arithmetic', this is seldom the word you want for that sense: 数理 really refers to mathematical principles — mathematics as a field — rather than the everyday skill of calculation.

Use 算数 for arithmetic in the everyday sense — the school subject and basic calculation; 数理, despite its 'arithmetic' gloss, really points to mathematical principles, figures or accounts, and is seldom the word for simple arithmetic.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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