math - 8th grade

posted by taylor2008

use the numbers one to nine, each one only once. now multiply a two digit number by a three digit number and get a four digit answer using each of the digits, 1-9 each only once.

12 x 345 = 6789 of course that isn't a true statement though.

  1. bobpursley

    What is 28x157?

    http://www.worldofnumbers.com/ninedig1.htm

  2. taylor2008

    thanks mr pursley!

  3. jen

    I am curious to know how does one figure this out?
    Is there any formula? or just by trial-error method?

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