The game "Happy Soroban" is an entertaining mental arithmetic trainer

Through this game, children easily and quickly add, subtract, multiply and divide any measurements by means of their boundless imagination.

If you want to start the game, please enter your login and password.

If you have no login and password, please contact your nearest Children's intellectual development center (CIDC) "Pifagorka" or CIDC "Arkhimedka" in your city or contact us at

The game "Happy Soroban" is the best addition to the Mental Arithmetic training course.