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The Trick of Nines

March 17th, 2013 by eTutor

Is your child having trouble learning the “9″ times table? Here is a trick to help. Multiply any number by 9, and the answer will always add up to 9. Try it. 2 time 9 equals 18, and 1 plus 8 equals 9. 8 time 9 equals 72, and 7 plus 2 equals 9.

The trick works for very large numbers, as well, like this 8142 times 9 equals 73,278. 7 plus 3 plus 2 plus 7 plus 8 equals 27…and 2 plus 7 equals 9.

Give your child a calculator and let her try it for herself.

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  • Remjo Gonzales

    wow! amazing! great tip! thanks for making and sharing this article.. hope you could make more..

    Remjo Gonzales
    http://www.projectmanager.com

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