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: 78×79
    Solution:
    78×79 = 6162
    Column vertical calculation:

							7	8
✖							7	9
						7	0	2
					5	4	6
					6	1	6	2

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 77×67
    Solution:
    77×67 = 5159
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 37×56
    Solution:
    37×56 = 2072
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 67×35
    Solution:
    67×35 = 2345
    Column vertical calculation:

							6	7
✖							3	5
						3	3	5
					2	0	1
					2	3	4	5

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 59×49
    Solution:
    59×49 = 2891
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 96×95
    Solution:
    96×95 = 9120
    Column vertical calculation:

							9	6
✖							9	5
						4	8	0
					8	6	4
					9	1	2	0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 26×83
    Solution:
    26×83 = 2158
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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