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: 32×28
    Solution:
    32×28 = 896
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 23×23
    Solution:
    23×23 = 529
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 92×82
    Solution:
    92×82 = 7544
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 32×23
    Solution:
    32×23 = 736
    Column vertical calculation:

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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 12×62
    Solution:
    12×62 = 744
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 22×81
    Solution:
    22×81 = 1782
    Column vertical calculation:

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

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 27×72
    Solution:
    27×72 = 1944
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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