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: 207×30
    Solution:
    207×30 = 6210
    Column vertical calculation:

							2	0	7
✖								3	0
							0	0	0
						6	2	1
						6	2	1	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 141×50
    Solution:
    141×50 = 7050
    Column vertical calculation:

							1	4	1
✖								5	0
							0	0	0
						7	0	5
						7	0	5	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 1100÷50
    Solution:
    1100÷50 = 22
    Column vertical calculation:

					2	2
5	0	丿	1	1	0	0
			1	0	0
				1	0	0
				1	0	0
						0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 330×40
    Solution:
    330×40 = 13200
    Column vertical calculation:

							3	3	0
✖								4	0
							0	0	0
					1	3	2	0
					1	3	2	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 152×40
    Solution:
    152×40 = 6080
    Column vertical calculation:

							1	5	2
✖								4	0
							0	0	0
						6	0	8
						6	0	8	0

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 1080÷60
    Solution:
    1080÷60 = 18
    Column vertical calculation:

					1	8
6	0	丿	1	0	8	0
				6	0
				4	8	0
				4	8	0
						0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 530×40
    Solution:
    530×40 = 21200
    Column vertical calculation:

							5	3	0
✖								4	0
							0	0	0
					2	1	2	0
					2	1	2	0	0

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>>注：本次最多计算 7 道题。

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