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: 108×40
    Solution:
    108×40 = 4320
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 122×40
    Solution:
    122×40 = 4880
    Column vertical calculation:

							1	2	2
✖								4	0
							0	0	0
						4	8	8
						4	8	8	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 1080÷30
    Solution:
    1080÷30 = 36
    Column vertical calculation:

					3	6
3	0	丿	1	0	8	0
				9	0
				1	8	0
				1	8	0
						0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 730×40
    Solution:
    730×40 = 29200
    Column vertical calculation:

							7	3	0
✖								4	0
							0	0	0
					2	9	2	0
					2	9	2	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 232×40
    Solution:
    232×40 = 9280
    Column vertical calculation:

							2	3	2
✖								4	0
							0	0	0
						9	2	8
						9	2	8	0

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 2800÷140
    Solution:
    2800÷140 = 20
    Column vertical calculation:

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

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 708×40
    Solution:
    708×40 = 28320
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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