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22-12-2015
Mathematics

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Explain why you should record a 1 in the tens column when you regroup in an addition problem

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22-12-2015

Because you only get space for one symbol and if it is more than 9, you add the first number to the number to the left. For example :
16+38=54
6+8=14, so you write 4 and add 1 to (1+3)

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