mental arithmetic
English edit
Noun edit
mental arithmetic (usually uncountable, plural mental arithmetics)
- 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 edit
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