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: 809×30
    Solution:
    809×30 = 24270
    Column vertical calculation:

							8	0	9
✖								3	0
							0	0	0
					2	4	2	7
					2	4	2	7	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 263×30
    Solution:
    263×30 = 7890
    Column vertical calculation:

							2	6	3
✖								3	0
							0	0	0
						7	8	9
						7	8	9	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 6800÷170
    Solution:
    6800÷170 = 40
    Column vertical calculation:

						4	0
1	7	0	丿	6	8	0	0
				6	8	0
						0	0
							0
							0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 550×20
    Solution:
    550×20 = 11000
    Column vertical calculation:

							5	5	0
✖								2	0
							0	0	0
					1	1	0	0
					1	1	0	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 194×20
    Solution:
    194×20 = 3880
    Column vertical calculation:

							1	9	4
✖								2	0
							0	0	0
						3	8	8
						3	8	8	0

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 3000÷100
    Solution:
    3000÷100 = 30
    Column vertical calculation:

						3	0
1	0	0	丿	3	0	0	0
				3	0	0
						0	0
							0
							0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 506×60
    Solution:
    506×60 = 30360
    Column vertical calculation:

							5	0	6
✖								6	0
							0	0	0
					3	0	3	6
					3	0	3	6	0

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>>注：本次最多计算 7 道题。

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