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: 11×20
    Solution:
    11×20 = 220
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 110×6
    Solution:
    110×6 = 660
    Column vertical calculation:

						1	1	0
✖								6
						6	6	0
						6	6	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 100÷2
    Solution:
    100÷2 = 50
    Column vertical calculation:

			5	0
2	丿	1	0	0
		1	0
			0	0
				0
				0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 16×20
    Solution:
    16×20 = 320
    Column vertical calculation:

							1	6
✖							2	0
							0	0
						3	2
						3	2	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 120×6
    Solution:
    120×6 = 720
    Column vertical calculation:

						1	2	0
✖								6
						7	2	0
						7	2	0

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 120÷3
    Solution:
    120÷3 = 40
    Column vertical calculation:

			4	0
3	丿	1	2	0
		1	2
			0	0
				0
				0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 25×60
    Solution:
    25×60 = 1500
    Column vertical calculation:

							2	5
✖							6	0
							0	0
					1	5	0
					1	5	0	0

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>>注：本次最多计算 7 道题。

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