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: 91×60
    Solution:
    91×60 = 5460
    Column vertical calculation:

							9	1
✖							6	0
							0	0
					5	4	6
					5	4	6	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 270×6
    Solution:
    270×6 = 1620
    Column vertical calculation:

						2	7	0
✖								6
					1	6	2	0
					1	6	2	0

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 180÷18
    Solution:
    180÷18 = 10
    Column vertical calculation:

				1	0
1	8	丿	1	8	0
			1	8
				0	0
					0
					0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 29×50
    Solution:
    29×50 = 1450
    Column vertical calculation:

							2	9
✖							5	0
							0	0
					1	4	5
					1	4	5	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 143×3
    Solution:
    143×3 = 429
    Column vertical calculation:

						1	4	3
✖								3
						4	2	9
						4	2	9

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 130÷5
    Solution:
    130÷5 = 26
    Column vertical calculation:

			2	6
5	丿	1	3	0
		1	0
			3	0
			3	0
				0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 82×50
    Solution:
    82×50 = 4100
    Column vertical calculation:

							8	2
✖							5	0
							0	0
					4	1	0
					4	1	0	0

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>>注：本次最多计算 7 道题。

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