Practice the Kraepelin test, a mental arithmetic exercise. Add adjacent numbers and input the last digit. Features custom operators, test assessment, and a PRO version with handwriting recognition and ad removal.






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Practice the Kraepelin test, a mental arithmetic exercise. Add adjacent numbers and input the last digit. Features custom operators, test assessment, and a PRO version with handwriting recognition and ad removal.






Practice number addition exercises inspired by the Kraepelin method to sharpen mental arithmetic and build concentration. Offers unlimited practice with real-time scoring and detailed performance insights for cognitive training.



