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: 50×600
    Solution:
    50×600 = 30000
    Column vertical calculation:

								5	0
✖							6	0	0
								0	0
							0	0
					3	0	0
					3	0	0	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 41×200
    Solution:
    41×200 = 8200
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 41×300
    Solution:
    41×300 = 12300
    Column vertical calculation:

								4	1
✖							3	0	0
								0	0
							0	0
					1	2	3
					1	2	3	0	0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 28×3
    Solution:
    28×3 = 84
    Column vertical calculation:

						2	8
✖							3
						8	4
						8	4

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 27×50
    Solution:
    27×50 = 1350
    Column vertical calculation:

							2	7
✖							5	0
							0	0
					1	3	5
					1	3	5	0

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 21×80
    Solution:
    21×80 = 1680
    Column vertical calculation:

							2	1
✖							8	0
							0	0
					1	6	8
					1	6	8	0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 36×40
    Solution:
    36×40 = 1440
    Column vertical calculation:

							3	6
✖							4	0
							0	0
					1	4	4
					1	4	4	0

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>>注：本次最多计算 7 道题。

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