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: 230×40
    Solution:
    230×40 = 9200
    Column vertical calculation:

							2	3	0
✖								4	0
							0	0	0
						9	2	0
						9	2	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 132×40
    Solution:
    132×40 = 5280
    Column vertical calculation:

							1	3	2
✖								4	0
							0	0	0
						5	2	8
						5	2	8	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 1400÷40
    Solution:
    1400÷40 = 35
    Column vertical calculation:

					3	5
4	0	丿	1	4	0	0
			1	2	0
				2	0	0
				2	0	0
						0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 65×20
    Solution:
    65×20 = 1300
    Column vertical calculation:

							6	5
✖							2	0
							0	0
					1	3	0
					1	3	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 214×2
    Solution:
    214×2 = 428
    Column vertical calculation:

						2	1	4
✖								2
						4	2	8
						4	2	8

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 3600÷120
    Solution:
    3600÷120 = 30
    Column vertical calculation:

						3	0
1	2	0	丿	3	6	0	0
				3	6	0
						0	0
							0
							0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 105×200
    Solution:
    105×200 = 21000
    Column vertical calculation:

								1	0	5
✖								2	0	0
								0	0	0
							0	0	0
						2	1	0
						2	1	0	0	0

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>>注：本次最多计算 7 道题。

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