# mental calculation

> arithmetical calculations using only the human brain

**Wikidata**: [Q620584](https://www.wikidata.org/wiki/Q620584)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Mental_calculation)  
**Source**: https://4ort.xyz/entity/mental-calculation


## References

1. Nuovo soggettario
2. Freebase Data Dumps. 2013
3. BBC Things
4. KBpedia
5. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)