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Learn to use the abacus(soroban), the Japanese way - Part 2
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Finger Mathematics - How to calculate Faster than a calculator Mental maths - 10
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Japan's ancient secret to better cognitive memory - BBC REEL
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Apprendre à compter avec le soroban (1/4)
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La face cachée des tables de multiplication - Micmaths
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Abacus Tutorial: 1 Basic function
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7 Outside The Box Puzzles
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