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

[1/3 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 52×500
    Solution:
    52×500 = 26000
    Column vertical calculation:

								5	2
✖							5	0	0
								0	0
							0	0
					2	6	0
					2	6	0	0	0

[2/3 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 191×50
    Solution:
    191×50 = 9550
    Column vertical calculation:

							1	9	1
✖								5	0
							0	0	0
						9	5	5
						9	5	5	0

[3/3 Integer column vertical calculation]
    Question type: Integer division
    Original question: 1500÷100
    Solution:
    1500÷100 = 15
    Column vertical calculation:

						1	5
1	0	0	丿	1	5	0	0
				1	0	0
					5	0	0
					5	0	0
							0

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