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: 62×66
    Solution:
    62×66 = 4092
    Column vertical calculation:

							6	2
✖							6	6
						3	7	2
					3	7	2
					4	0	9	2

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 60×56
    Solution:
    60×56 = 3360
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 79×67
    Solution:
    79×67 = 5293
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 45×27
    Solution:
    45×27 = 1215
    Column vertical calculation:

							4	5
✖							2	7
						3	1	5
						9	0
					1	2	1	5

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 39×84
    Solution:
    39×84 = 3276
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 78×88
    Solution:
    78×88 = 6864
    Column vertical calculation:

							7	8
✖							8	8
						6	2	4
					6	2	4
					6	8	6	4

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 79×65
    Solution:
    79×65 = 5135
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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