mental arithmeticnoun [ U ]
uk/ˌmen.təl əˈrɪθ.mə.tɪk/us/ˌmen.t̬əl əˈrɪθ.mə.t̬ɪk/calculations that you do in your mind, without writing down any numbers
Thesaurus: synonyms and related words
Branches & types of mathematics
- algebra
- arithmetic
- calculus
- Cartesian
- differential calculus
- Euclidean
- geometric
- geometry
- mathematical
- mathematician
- mathematics
- maths
- non-Euclidean
- number theory
- trig
- trigonometry