Arithmetic Grade Two

Lesson Fifty-one: Regrouping or Not



You don't have to regroup any of these problems:

	 23		 35		 46		 65		 29
	- 1		- 2		- 3		- 4		- 5
	---		---		---		---		---
	 22		 33		 43		 61		 24


You DO regroup for these problems: 21 38 51 21 66 - 9 - 9 - 3 - 4 - 7 --- --- --- --- --- 12 29 48 17 59

If the bottom digit in the ONE's column is greater than the top digit in the ONE's column, then you MUST regroup!
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