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: 14×6
    Solution:
    14×6 = 84
    Column vertical calculation:

						1	4
✖							6
						8	4
						8	4

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 52×7
    Solution:
    52×7 = 364
    Column vertical calculation:

						5	2
✖							7
					3	6	4
					3	6	4

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 2×19
    Solution:
    2×19 = 38
    Column vertical calculation:

							2
✖						1	9
						1	8
						2
						3	8

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 10×8
    Solution:
    10×8 = 80
    Column vertical calculation:

						1	0
✖							8
						8	0
						8	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 14×2
    Solution:
    14×2 = 28
    Column vertical calculation:

						1	4
✖							2
						2	8
						2	8

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 41×6
    Solution:
    41×6 = 246
    Column vertical calculation:

						4	1
✖							6
					2	4	6
					2	4	6

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 40×2
    Solution:
    40×2 = 80
    Column vertical calculation:

						4	0
✖							2
						8	0
						8	0

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>>注：本次最多计算 7 道题。

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