Posted by Andrew on Friday, August 30, 2013 at 2:10am.
What is the sum of the six threedigit 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  Steve, Friday, August 30, 2013 at 4:45am
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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