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How to multiply numbers quickly
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Classroom Contents
The Mathemagician
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- 1 Arthur Benjamin's Introduction
- 2 A card trick that has never been seen before.
- 3 Faster than a speeding calculator.
- 4 Predicting the number you didn't say.
- 5 Sudoku from the audience
- 6 What day of the week were you born on?
- 7 How to multiply numbers quickly
- 8 Who can Square the number 97?
- 9 Multiples of eleven.
- 10 Divide and average.
- 11 The Mathemagician's apprentice Ethan Brown.
- 12 Squaring five digits in your head.
