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: 751×400
    Solution:
    751×400 = 300400
    Column vertical calculation:

								7	5	1
✖								4	0	0
								0	0	0
							0	0	0
					3	0	0	4
					3	0	0	4	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 7051×70
    Solution:
    7051×70 = 493570
    Column vertical calculation:

							7	0	5	1
✖									7	0
							0	0	0	0
					4	9	3	5	7
					4	9	3	5	7	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 1440÷720
    Solution:
    1440÷720 = 2
    Column vertical calculation:

							2
7	2	0	丿	1	4	4	0
				1	4	4	0
							0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 702×400
    Solution:
    702×400 = 280800
    Column vertical calculation:

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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 6092×90
    Solution:
    6092×90 = 548280
    Column vertical calculation:

							6	0	9	2
✖									9	0
							0	0	0	0
					5	4	8	2	8
					5	4	8	2	8	0

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 5760÷640
    Solution:
    5760÷640 = 9
    Column vertical calculation:

							9
6	4	0	丿	5	7	6	0
				5	7	6	0
							0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 1450×700
    Solution:
    1450×700 = 1015000
    Column vertical calculation:

								1	4	5	0
✖									7	0	0
								0	0	0	0
							0	0	0	0
					1	0	1	5	0
					1	0	1	5	0	0	0

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>>注：本次最多计算 7 道题。

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