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: 11×11
    Solution:
    11×11 = 121
    Column vertical calculation:

							1	1
✖							1	1
							1	1
						1	1
						1	2	1

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 32×24
    Solution:
    32×24 = 768
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 43×23
    Solution:
    43×23 = 989
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 22×34
    Solution:
    22×34 = 748
    Column vertical calculation:

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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 43×83
    Solution:
    43×83 = 3569
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 11×22
    Solution:
    11×22 = 242
    Column vertical calculation:

							1	1
✖							2	2
							2	2
						2	2
						2	4	2

[7/7 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

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>>注：本次最多计算 7 道题。

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