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How to Become a Lightning Calculator

by Anonymous

11 sections · Download EPUB

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  1. 1Instantaneous Addition
  2. 2How to Add Two Columns at Once
  3. 3Multiplication
  4. 4Accurate Interest
  5. 5Equation of Payments
  6. 6The Lightning Calculator’s Addition
  7. 7Bank Discount
  8. 8How to Make Change
  9. 9Proof of Multiplication in Ten Seconds
  10. 10The Canadian Interest Rule
  11. 11Table of Transposed Numbers

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