Mental Calculation & Abacus
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Play the best Mental Calculation and Abacus game!
* Practice with a variety of questions
* Easy tutorial for learning Abacus
* Practice with a variety of questions
* Easy tutorial for learning Abacus
Mental Calculation & Abacus / What's New in vUnknown
* The number in the number input window has been increased.
(maximum 7 digits → maximum 10 digits)
