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: 35×95
    Solution:
    35×95 = 3325
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 77×68
    Solution:
    77×68 = 5236
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 73×98
    Solution:
    73×98 = 7154
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 42×57
    Solution:
    42×57 = 2394
    Column vertical calculation:

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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 27×82
    Solution:
    27×82 = 2214
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 96×28
    Solution:
    96×28 = 2688
    Column vertical calculation:

							9	6
✖							2	8
						7	6	8
					1	9	2
					2	6	8	8

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 58×27
    Solution:
    58×27 = 1566
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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