Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Mental Math Tricks by Michael Shermer
£6.99
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Speed Mathematics: Secret Skills for Quick Calculation by Bill Handley
£7.49
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The Sharper Mind: Mental Games for a Keen Mind and a Foolproof Memory by Fred B. Chernow
£11.99
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The Trachtenberg Speed System of Basic Mathematics by Jakow Trachtenberg
£5.99
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Arithmetricks: 50 Easy Ways to Add, Subtract, Multiply and Divide Without a Calculator by Edward H. Julius
£5.49
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Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Mental Math Tricks by Michael Shermer
£6.99
|
The Sharper Mind: Mental Games for a Keen Mind and a Foolproof Memory by Fred B. Chernow
£11.99
|
How to Calculate Quickly by Henry Sticker
£4.79
|
Speed Mathematics Using the Vedic System by Vali Nasser |