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: 155×6
    Solution:
    155×6 = 930
    Column vertical calculation:

						1	5	5
✖								6
						9	3	0
						9	3	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 968×6
    Solution:
    968×6 = 5808
    Column vertical calculation:

						9	6	8
✖								6
					5	8	0	8
					5	8	0	8

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 484×4
    Solution:
    484×4 = 1936
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 364×5
    Solution:
    364×5 = 1820
    Column vertical calculation:

						3	6	4
✖								5
					1	8	2	0
					1	8	2	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 904×2
    Solution:
    904×2 = 1808
    Column vertical calculation:

						9	0	4
✖								2
					1	8	0	8
					1	8	0	8

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 852×5
    Solution:
    852×5 = 4260
    Column vertical calculation:

						8	5	2
✖								5
					4	2	6	0
					4	2	6	0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 522×9
    Solution:
    522×9 = 4698
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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