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Math Tip

Discussion in 'General Discussions' started by peterjack, Jul 7, 2017.

  1. PETERJACK

    peterjack New Member

    Location:
    United States
    Today, I learned a really cool trick for multiplying numbers by 11. I'll explain it best I can. But it's a lot easier to explain when you have voice and words.

    First, you take the number (that is not 11) and put a space between the digits.
    Second, add the digits together and put that number in the newly made space.
    If the digits add-up to a two digit number, you add the frist digit of it to the first digit of the other number.
    Now seems like a good time for an example.
     
    peterjack, Jul 7, 2017
    #1