Overview: 7 questions will be solved this time.Among them
           ☆7 integer calculations

[1/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 749×500
    Solution:
    749×500 = 374500
    Column vertical calculation:

								7	4	9
✖								5	0	0
								0	0	0
							0	0	0
					3	7	4	5
					3	7	4	5	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 7042×60
    Solution:
    7042×60 = 422520
    Column vertical calculation:

							7	0	4	2
✖									6	0
							0	0	0	0
					4	2	2	5	2
					4	2	2	5	2	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 8400÷700
    Solution:
    8400÷700 = 12
    Column vertical calculation:

						1	2
7	0	0	丿	8	4	0	0
				7	0	0
				1	4	0	0
				1	4	0	0
							0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 347×600
    Solution:
    347×600 = 208200
    Column vertical calculation:

								3	4	7
✖								6	0	0
								0	0	0
							0	0	0
					2	0	8	2
					2	0	8	2	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 3037×50
    Solution:
    3037×50 = 151850
    Column vertical calculation:

							3	0	3	7
✖									5	0
							0	0	0	0
					1	5	1	8	5
					1	5	1	8	5	0

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 3200÷400
    Solution:
    3200÷400 = 8
    Column vertical calculation:

							8
4	0	0	丿	3	2	0	0
				3	2	0	0
							0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 373×300
    Solution:
    373×300 = 111900
    Column vertical calculation:

								3	7	3
✖								3	0	0
								0	0	0
							0	0	0
					1	1	1	9
					1	1	1	9	0	0

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>>注：本次最多计算 7 道题。

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