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: 370×50
    Solution:
    370×50 = 18500
    Column vertical calculation:

							3	7	0
✖								5	0
							0	0	0
					1	8	5	0
					1	8	5	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 161×50
    Solution:
    161×50 = 8050
    Column vertical calculation:

							1	6	1
✖								5	0
							0	0	0
						8	0	5
						8	0	5	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 2100÷70
    Solution:
    2100÷70 = 30
    Column vertical calculation:

					3	0
7	0	丿	2	1	0	0
			2	1	0
					0	0
						0
						0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 850×20
    Solution:
    850×20 = 17000
    Column vertical calculation:

							8	5	0
✖								2	0
							0	0	0
					1	7	0	0
					1	7	0	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 254×20
    Solution:
    254×20 = 5080
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 4800÷160
    Solution:
    4800÷160 = 30
    Column vertical calculation:

						3	0
1	6	0	丿	4	8	0	0
				4	8	0
						0	0
							0
							0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 1020×50
    Solution:
    1020×50 = 51000
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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