QMentat is a program to help you practice mental arithmetic. It uses arbitrary length fixed point arithmetic and can handle any size numbers, only limited by the size of your screen (and in the case of division with an integer result, the speed at which the number can be factored, and square root of the largest number). It is also quite configurable, allowing you to tailor the questions to your needs.
Features
- Questions harder than any human could conceivably answer unassisted
- Simple, clean interface
- Hear the questions, and hide them from view if you wish
- Free, open-source GPL3 application
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Simple and great!
