Aufrufe
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Manuel Akanji is a maths genius!
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6 Puzzles To Test Your Brain Power
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Quick: What's 78,269 x 78,269?
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The most ridiculously complicated maths card trick.
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Mental multiplication in 3 seconds
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The Most Amazing Math Book ever Written? Learn to think faster than a calculator!
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Art Benjamin's Backgammon Lecture - Counting Magic: Handy Mental Shortcuts to Improve your Game
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Super Math Spy from Chalk and Chuckles