Pifagorea is a game which teaches you quick ways of calculation. We have 30 methods of doing multiplications, divisions and squarings easily, and four game modes where you can practice them.
We will add new methods and improve gameplay based on your feedback.
Avaliable for free at Google Play: https://forums.androidcentral.com/e...ls?id=ru.yandex.mathgame&hl=en&token=qaT3qSm_
Screenshots (click to see full sized):