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: 43×400
    Solution:
    43×400 = 17200
    Column vertical calculation:

								4	3
✖							4	0	0
								0	0
							0	0
					1	7	2
					1	7	2	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 172×40
    Solution:
    172×40 = 6880
    Column vertical calculation:

							1	7	2
✖								4	0
							0	0	0
						6	8	8
						6	8	8	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 2000÷80
    Solution:
    2000÷80 = 25
    Column vertical calculation:

					2	5
8	0	丿	2	0	0	0
			1	6	0
				4	0	0
				4	0	0
						0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 206×20
    Solution:
    206×20 = 4120
    Column vertical calculation:

							2	0	6
✖								2	0
							0	0	0
						4	1	2
						4	1	2	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 140×60
    Solution:
    140×60 = 8400
    Column vertical calculation:

							1	4	0
✖								6	0
							0	0	0
						8	4	0
						8	4	0	0

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 1000÷50
    Solution:
    1000÷50 = 20
    Column vertical calculation:

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

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 32×500
    Solution:
    32×500 = 16000
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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