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Math Hands: Finger Figuring to Turn Your Hands Into a High-Speed Calculator (MemoMathics: Supercharge your learning skills)

Math Hands: Finger Figuring to Turn Your Hands Into a High-Speed Calculator (MemoMathics: Supercharge your learning skills)
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Thomas E. Davies

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Math Hands: Finger Figuring to Turn Your Hands Into a High-Speed Calculator (MemoMathics: Supercharge your learning skills)