aritmētisks

From aritmētika (“arithmetic”) +‎ -isks. Probably not formed as such in Latvian, but borrowed and adapted from other European languages. Ultimately 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”).

aritmētisks (aritmētiskais, aritmētiskāks, visaritmētiskākais adverb, aritmētiski)

1. (mathematics) arithmetic (typical of, or associated with, arithmetic)

   aritmētiskās darbības ― arithmetic operations

   vidējais aritmētiskais lielums ― arithmetic mean (lit. mean arithmetic quantity)

   risināt aritmētiskus piemērus galvā ― to solve arithmetic examples (= problems) in the head (i.e., without paper or calculators)

• aritmētiskā progresija

• aritmētika