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: 68×47
    Solution:
    68×47 = 3196
    Column vertical calculation:

							6	8
✖							4	7
						4	7	6
					2	7	2
					3	1	9	6

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 37×97
    Solution:
    37×97 = 3589
    Column vertical calculation:

							3	7
✖							9	7
						2	5	9
					3	3	3
					3	5	8	9

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 38×86
    Solution:
    38×86 = 3268
    Column vertical calculation:

							3	8
✖							8	6
						2	2	8
					3	0	4
					3	2	6	8

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 59×93
    Solution:
    59×93 = 5487
    Column vertical calculation:

							5	9
✖							9	3
						1	7	7
					5	3	1
					5	4	8	7

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 66×83
    Solution:
    66×83 = 5478
    Column vertical calculation:

							6	6
✖							8	3
						1	9	8
					5	2	8
					5	4	7	8

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 36×37
    Solution:
    36×37 = 1332
    Column vertical calculation:

							3	6
✖							3	7
						2	5	2
					1	0	8
					1	3	3	2

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 42×48
    Solution:
    42×48 = 2016
    Column vertical calculation:

							4	2
✖							4	8
						3	3	6
					1	6	8
					2	0	1	6

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>>注：本次最多计算 7 道题。

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