Amazon.com has kindle edition of "Secrets of Mental Math: The Mathemagician’s Guide to Lightning Calculation and Amazing Math Tricks" for $2
https://www.amazon.com/dp/B000Q80…DAbMN
Fakespot : B
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Amazon.com has kindle edition of "Secrets of Mental Math: The Mathemagician’s Guide to Lightning Calculation and Amazing Math Tricks" for $2
https://www.amazon.com/dp/B000Q80…DAbMN
Fakespot : B