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: 83×40
    Solution:
    83×40 = 3320
    Column vertical calculation:

							8	3
✖							4	0
							0	0
					3	3	2
					3	3	2	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 252×4
    Solution:
    252×4 = 1008
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 320÷16
    Solution:
    320÷16 = 20
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 94×30
    Solution:
    94×30 = 2820
    Column vertical calculation:

							9	4
✖							3	0
							0	0
					2	8	2
					2	8	2	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 273×3
    Solution:
    273×3 = 819
    Column vertical calculation:

						2	7	3
✖								3
						8	1	9
						8	1	9

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 450÷18
    Solution:
    450÷18 = 25
    Column vertical calculation:

				2	5
1	8	丿	4	5	0
			3	6
				9	0
				9	0
					0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 100×20
    Solution:
    100×20 = 2000
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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