Math Trick For Your Fingers - Easy Multiplication

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Discover how to multiply by 5, 6, 7, 8, 9, & 10 by just using your fingers. It's easy and you can learn the...
Discover how to multiply by 5, 6, 7, 8, 9, & 10 by just using your fingers. It's easy and you can learn the technique pretty quickly.
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