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: 58×67
    Solution:
    58×67 = 3886
    Column vertical calculation:

							5	8
✖							6	7
						4	0	6
					3	4	8
					3	8	8	6

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 88×94
    Solution:
    88×94 = 8272
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 49×95
    Solution:
    49×95 = 4655
    Column vertical calculation:

							4	9
✖							9	5
						2	4	5
					4	4	1
					4	6	5	5

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 49×66
    Solution:
    49×66 = 3234
    Column vertical calculation:

							4	9
✖							6	6
						2	9	4
					2	9	4
					3	2	3	4

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 97×73
    Solution:
    97×73 = 7081
    Column vertical calculation:

							9	7
✖							7	3
						2	9	1
					6	7	9
					7	0	8	1

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 82×19
    Solution:
    82×19 = 1558
    Column vertical calculation:

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

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 88×64
    Solution:
    88×64 = 5632
    Column vertical calculation:

							8	8
✖							6	4
						3	5	2
					5	2	8
					5	6	3	2

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>>注：本次最多计算 7 道题。

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