Definition of mental arithmetic in English:

mental arithmetic

Syllabification: men·tal a·rith·me·tic

noun

  • Arithmetical calculations performed in the mind, without writing figures down or using a calculator.
    More example sentences
    • Daniel Tammet is a man with an exceptional mind: he can perform mental arithmetic faster than a pocket calculator, and learn a new language fluently, even one as tortuously complex as Icelandic, in a matter of days.
    • Lawrence Lee was known in the local area to be very good at mental arithmetic and it was this love of mathematics that he passed on to his daughter.
    • Calling himself a mathemagician, he astonishes audiences with amazing feats of mental arithmetic.

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Word of the day skosh
Pronunciation: skōSH
noun
a small amount; a little