Overview: 3 questions will be solved this time.Among them
           ☆3 integer calculations

[1/3 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 220+600
    Solution:
    220+600 = 820
    Column vertical calculation:

			2	2	0
➕			6	0	0
			8	2	0

[2/3 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 360+100
    Solution:
    360+100 = 460
    Column vertical calculation:

			3	6	0
➕			1	0	0
			4	6	0

[3/3 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 200+600
    Solution:
    200+600 = 800
    Column vertical calculation:

			2	0	0
➕			6	0	0
			8	0	0

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