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: 830×40
    Solution:
    830×40 = 33200
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 252×40
    Solution:
    252×40 = 10080
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 3200÷160
    Solution:
    3200÷160 = 20
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 808×40
    Solution:
    808×40 = 32320
    Column vertical calculation:

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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 262×40
    Solution:
    262×40 = 10480
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 5100÷170
    Solution:
    5100÷170 = 30
    Column vertical calculation:

						3	0
1	7	0	丿	5	1	0	0
				5	1	0
						0	0
							0
							0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 69×30
    Solution:
    69×30 = 2070
    Column vertical calculation:

							6	9
✖							3	0
							0	0
					2	0	7
					2	0	7	0

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>>注：本次最多计算 7 道题。

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