Fourth grade math

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What is the sum of the six three-digit numbers that have the digits 1, 2, and 3? What is the sum in each column? Why is the sum in each column the same? my mom doesn't know how to help me with this one?

  • Fourth grade math -

    Each column will have 2 1's, 2 2's, and 2 3's.

    So, each columns will total to 12.

    so, adding in the carries between columns,

    12 12 12 makes 1332

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