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: 310×60
    Solution:
    310×60 = 18600
    Column vertical calculation:

							3	1	0
✖								6	0
							0	0	0
					1	8	6	0
					1	8	6	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 150×60
    Solution:
    150×60 = 9000
    Column vertical calculation:

							1	5	0
✖								6	0
							0	0	0
						9	0	0
						9	0	0	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 1020÷60
    Solution:
    1020÷60 = 17
    Column vertical calculation:

					1	7
6	0	丿	1	0	2	0
				6	0
				4	2	0
				4	2	0
						0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 440×30
    Solution:
    440×30 = 13200
    Column vertical calculation:

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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 173×30
    Solution:
    173×30 = 5190
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 2400÷80
    Solution:
    2400÷80 = 30
    Column vertical calculation:

					3	0
8	0	丿	2	4	0	0
			2	4	0
					0	0
						0
						0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 408×40
    Solution:
    408×40 = 16320
    Column vertical calculation:

							4	0	8
✖								4	0
							0	0	0
					1	6	3	2
					1	6	3	2	0

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>>注：本次最多计算 7 道题。

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