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  1. 1

    Secrets of mental math the mathemagician's guide to lightning calculation and amazing math tricks af Benjamin, Arthur

    Udgivet 2006
    Table of contents only
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    Secrets of mental math the mathemagician's guide to lightning calculation and amazing math tricks
  2. 2

    Mental math af Mariano, Ma. Luisa

    Udgivet 2004
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    Mental math
  3. 3

    Mental math af Mariano, Ma. Luisa

    Udgivet 2004
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    Mental math
  4. 4

    Arithmetricks 50 easy ways to add, subtract, multiply, and divide without a calculator af Julius, Edward H. 1952-

    Udgivet 1995
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    Arithmetricks 50 easy ways to add, subtract, multiply, and divide without a calculator
  5. 5

    Estimation and mental computation 1986 yearbook

    Udgivet 1986
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    Estimation and mental computation 1986 yearbook
  6. 6

    Estimation and mental computation 1986 yearbook

    Udgivet 1986
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    Estimation and mental computation 1986 yearbook
  7. 7

    Estimation and mental computation 1986 yearbook

    Udgivet 1986
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    Estimation and mental computation 1986 yearbook
  8. 8

    The magic of numbers af Tocquet, Robert

    Udgivet 1962
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    The magic of numbers

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