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: 15×82
    Solution:
    15×82 = 1230
    Column vertical calculation:

							1	5
✖							8	2
							3	0
					1	2	0
					1	2	3	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 39×54
    Solution:
    39×54 = 2106
    Column vertical calculation:

							3	9
✖							5	4
						1	5	6
					1	9	5
					2	1	0	6

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 44×23
    Solution:
    44×23 = 1012
    Column vertical calculation:

							4	4
✖							2	3
						1	3	2
						8	8
					1	0	1	2

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 22×72
    Solution:
    22×72 = 1584
    Column vertical calculation:

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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 98×27
    Solution:
    98×27 = 2646
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 43×90
    Solution:
    43×90 = 3870
    Column vertical calculation:

							4	3
✖							9	0
							0	0
					3	8	7
					3	8	7	0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 95×37
    Solution:
    95×37 = 3515
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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