mental calculation

Noun

 * 1) 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

 * Arabic: حساب ذهني
 * Catalan: càlcul mental
 * Chinese:
 * Cantonese: 心算
 * Mandarin:
 * Dutch:
 * Finnish: päässälasku
 * French:
 * German:
 * Greek: νοεροί υπολογισμοί
 * Hebrew: חישוב בעל־פה
 * Hindi: मनगणित
 * Hungarian:
 * Indonesian: aritmetika cepat
 * Italian: calcolo mentale
 * Japanese:
 * Korean: 암산
 * Malay:
 * Norman: caltchul du sens d'sa tête
 * Norwegian: hoderegning
 * Persian: محاسبه ذهنی
 * Russian: устный счёт
 * Serbo-Croatian: ментална аритметикa
 * Spanish: cálculo mental
 * Swedish:
 * Tamil: மனக்கணக்கு
 * Ukrainian: усні обчислення
 * Waray-Waray: kalkulasyon ha huna-huna