Practice mental math with a collection of 1001 arithmetic problems. This app offers a way to exercise your brain, inspired by classic educational methods. It's perfect for quick mental workouts anytime, anywhere.
В уме by Roman Koksharov




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Whether you want more options like Логические задачи и тесты or a completely different take on the same concept, our curated list of 40+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.




Practice mental math with a collection of 1001 arithmetic problems. This app offers a way to exercise your brain, inspired by classic educational methods. It's perfect for quick mental workouts anytime, anywhere.




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