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Posted by on Tuesday, February 26, 2013 at 3:50pm.

one 10 is regrouped as 10 ones in each number. work backwards. write the number with 10 ones grouped as 1 ten again.

1.tens ones
5 15

  • 3rd grade math - , Wednesday, February 27, 2013 at 4:03pm

    regroup the ten ones as 1 ten again

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