Trach
Speed Math
- Learn with tutorials
- Improve with practice mode
- Choose your difficulty
‣
The Trachtenberg System is a system of rapid mental calculation.
Jakow Trachtenberg developed the system in order to keep his mind occupied while being held in a Nazi concentration camp.
Category/Tags: Education, Math, Strategy, Problems, Brain, Games, Train, Solve, Speed, Easy, Multiply, Multiplication, Trachtenberg
Compatibility: Supports iOS 16.0+, iPhone, iPad, iPod, & Apple Silicon Macs
Privacy Policy