mental arithmetic

English

Noun

mental arithmetic (usually uncountable, plural mental arithmetics)

  1. Synonym of mental calculation (“arithmetical calculations using only the human brain, with no help from any supplies (such as pencil and paper) or devices such as a calculator”).

Translations
arithmetical calculations using only the human brain, with no help from any supplies (such as pencil and paper) or devices such as a calculator — see mental calculation
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