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Friday, June 09, 2006

Finger Math

- 9X Rule To multiply by 9
1. Spread your two hands out and place them on a desk or table in front of you.
2. To multiply by 3, fold down the 3rd finger from the left, if multiply by 4, it would be the 4th finger and so on.
3. The answer is 27 ... now read it from the two fingers on the left of the folded down finger and the 7 fingers on the right of it.

This works for anything up to 9x10!


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