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: 81×60
    Solution:
    81×60 = 4860
    Column vertical calculation:

							8	1
✖							6	0
							0	0
					4	8	6
					4	8	6	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 250×6
    Solution:
    250×6 = 1500
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 160÷16
    Solution:
    160÷16 = 10
    Column vertical calculation:

				1	0
1	6	丿	1	6	0
			1	6
				0	0
					0
					0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 47×50
    Solution:
    47×50 = 2350
    Column vertical calculation:

							4	7
✖							5	0
							0	0
					2	3	5
					2	3	5	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 181×5
    Solution:
    181×5 = 905
    Column vertical calculation:

						1	8	1
✖								5
						9	0	5
						9	0	5

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 270÷9
    Solution:
    270÷9 = 30
    Column vertical calculation:

			3	0
9	丿	2	7	0
		2	7
			0	0
				0
				0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 61×60
    Solution:
    61×60 = 3660
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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