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: 106×20
    Solution:
    106×20 = 2120
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 120×60
    Solution:
    120×60 = 7200
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 1200÷30
    Solution:
    1200÷30 = 40
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 92×500
    Solution:
    92×500 = 46000
    Column vertical calculation:

								9	2
✖							5	0	0
								0	0
							0	0
					4	6	0
					4	6	0	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 271×50
    Solution:
    271×50 = 13550
    Column vertical calculation:

							2	7	1
✖								5	0
							0	0	0
					1	3	5	5
					1	3	5	5	0

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 2700÷180
    Solution:
    2700÷180 = 15
    Column vertical calculation:

						1	5
1	8	0	丿	2	7	0	0
				1	8	0
					9	0	0
					9	0	0
							0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 909×30
    Solution:
    909×30 = 27270
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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