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: 66×69
    Solution:
    66×69 = 4554
    Column vertical calculation:

							6	6
✖							6	9
						5	9	4
					3	9	6
					4	5	5	4

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 76×63
    Solution:
    76×63 = 4788
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 96×86
    Solution:
    96×86 = 8256
    Column vertical calculation:

							9	6
✖							8	6
						5	7	6
					7	6	8
					8	2	5	6

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 61×76
    Solution:
    61×76 = 4636
    Column vertical calculation:

							6	1
✖							7	6
						3	6	6
					4	2	7
					4	6	3	6

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 16×65
    Solution:
    16×65 = 1040
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 62×61
    Solution:
    62×61 = 3782
    Column vertical calculation:

							6	2
✖							6	1
							6	2
					3	7	2
					3	7	8	2

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 27×66
    Solution:
    27×66 = 1782
    Column vertical calculation:

							2	7
✖							6	6
						1	6	2
					1	6	2
					1	7	8	2

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>>注：本次最多计算 7 道题。

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