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: 42×6
    Solution:
    42×6 = 252
    Column vertical calculation:

						4	2
✖							6
					2	5	2
					2	5	2

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 49×6
    Solution:
    49×6 = 294
    Column vertical calculation:

						4	9
✖							6
					2	9	4
					2	9	4

[3/7 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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 52×6
    Solution:
    52×6 = 312
    Column vertical calculation:

						5	2
✖							6
					3	1	2
					3	1	2

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 62×6
    Solution:
    62×6 = 372
    Column vertical calculation:

						6	2
✖							6
					3	7	2
					3	7	2

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 69×6
    Solution:
    69×6 = 414
    Column vertical calculation:

						6	9
✖							6
					4	1	4
					4	1	4

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 11×6
    Solution:
    11×6 = 66
    Column vertical calculation:

						1	1
✖							6
						6	6
						6	6

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>>注：本次最多计算 7 道题。

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