Explain three different ways in which children often regroup the two numbers while undertaking operations on them, using the example of 57 and 38, while solving 57-38. 

When children are performing operations on numbers, they often regroup the numbers in various ways. Here are three different ways in which children may regroup the numbers while solving 57-38:

1. Regrouping by ones: In this method, children focus on regrouping the ones place digits of the two numbers. They start from the right side and see that 7 is bigger than 8. Therefore, they cannot subtract 8 from 7. So, they regroup 5 from the tens place to the ones place ____ _________ ____ _________ ____ __________ ______ _______ ________.
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