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QMentat is a free, flexible and powerful mental arithmetic practice program.

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Version 0.9.0 released!

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). It is also quite configurable, allowing you to tailor the questions to your needs.

Currently, you may practice any of these operations:


Screenshot of QMentat addition screen Screenshot of QMentat addition settings screen Screenshot of QMentat division screen Screenshot of QMentat division settings screen


If you create a package for this program, please let me know so I can consider it for inclusion in this list.

Written by Michel Dusseault <>

Free download software