› calculations that you do in your mind, without writing down any numbersBranches and types of mathematics

(Definition of mental arithmetic noun from the Cambridge Advanced Learner's Dictionary & Thesaurus
© Cambridge University Press)

Focus on the pronunciation of mental arithmetic
You are looking at an entry to do with Branches & types of mathematics, but you might be interested in these topics from the **Mathematics & arithmetic** topic area:

- Addition, subtraction, multiplication & division
- Averages
- Calculations & calculating
- Fractions
- Geometrical & mathematical instruments
- Geometrical shapes
- Geometry: bends, loops & curves
- Geometry: describing angles, lines & orientations
- Geometry: parts of geometrical shapes
- Geometry: properties of circles & curves
- Mathematical symbols
- Numbering & counting
- Numbers generally
- Numbers: cardinal, including nought & zero
- Numbers: groups of things according to number
- Numbers: ordinal
- Numbers: single, double & multiple
- Numerical relationships
- Statistics
- Tables, graphs & diagrams
- Terms for numbers

“mental arithmetic”: synonyms and related words:

the quality of knowing someone very well, liking them a lot, and wanting to spend a lot of time together

Read our blog about how the English language behaves.

Find words and meanings that have just started to be used in English, and let us know what you think of them.