Trachtenberg system
Sign in to savesystem of rapid mental calculation
Wikidata facts
- Instance of
- mental calculation
- Named after
- Jakow Trachtenberg
- Image
- 2FingerMethod-third digit.png
Show 2 more facts
- discoverer or inventor
- Jakow Trachtenberg
- maintained by WikiProject
- WikiProject Mathematics
Sources (1)
via Wikidata · CC0