How to Quickly Multiply Any Number Between 10 and 20 I The Great Courses
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Mental Addition and Subtraction Tips — Math Tricks with Arthur Benjamin
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Magical Squaring
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Fast Mental Multiplication Trick - Multiply in your head using base 20 and 30
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How to Easily Memorize the Multiplication Table I Math Tips and Tricks with Art Benjamin
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La face cachée des tables de multiplication - Micmaths
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How to Solve a Rubik's Cube in 8 Steps | The Math of Games and Puzzles
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Arthur Benjamin - Secrets of Mental Math
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