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- Abacus - Simple Soroban Abacus
- iOS App: Istruzione di: Switt Kongdachalert
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- Punti: 1 + 10 (2.6) Versione: 1.1 A simple soroban abacus that also shows the number representing the value of each column. An abacus is a tool that has been used since ancient times to calculate. Calculations with ... ⥯
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