Arithmetic Grade One

Lesson One hundred thirteen: Addition Patterns


Addition Patterns

	 15		 15		 15		 15		 15
	+10		+20		+30		+40		+50
	---		---		---		---		---
	 25		 35		 45		 55		 65


28 28 28 28 28 +10 +20 +30 +40 +50 --- --- --- --- --- 38 48 58 68 78

NOTE: Point out to the student that the digits in the one's column can be added separately from the digits in the ten's column. Make a few more problems like these and solve them with the student.
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