mental arithmetic
1mental arithmetic — UK US noun [uncountable] calculations that you do in your mind, without writing them down Thesaurus: general words relating to mathematics and geometryhyponym to calculate or countsynonym * * * ˌmental aˈrithmetic [mental arithmetic] …
2Mental arithmetic — Mental Men tal, a. [F., fr. L. mentalis, fr. mens, mentis, the mind; akin to E. mind. See {Mind}.] Of or pertaining to the mind; intellectual; as, mental faculties; mental operations, conditions, or exercise. [1913 Webster] What a mental power… …
3mental arithmetic — mental a rithmetic n [U] the act of adding numbers together, multiplying them etc in your mind, without writing them down ▪ I did a quick bit of mental arithmetic …
4mental arithmetic — mental a rithmetic noun uncount calculations that you do in your mind, without writing them down …
5mental arithmetic — noun (U) the act of adding numbers together, multiplying them etc in your mind, without writing them down …
6mental arithmetic — UK / US noun [uncountable] calculations that you do in your mind, without writing them down …
7mental arithmetic — Helu na au …
8Mental calculation — comprises arithmetical calculations using only the human brain, with no help from calculators, computers, or pen and paper. People use mental calculation when computing tools are not available, when it is faster than other means of calculation… …
9mental — mental1 [ment′ l] adj. [ME < MFr < LL mentalis < L mens (gen. mentis), MIND] 1. of or for the mind or intellect [mental powers, mental aids] 2. done by, or carried on in, the mind (i.e., without using written symbols) [mental arithmetic] …
10Mental — Men tal, a. [F., fr. L. mentalis, fr. mens, mentis, the mind; akin to E. mind. See {Mind}.] Of or pertaining to the mind; intellectual; as, mental faculties; mental operations, conditions, or exercise. [1913 Webster] What a mental power This eye… …