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: 853×5
    Solution:
    853×5 = 4265
    Column vertical calculation:

						8	5	3
✖								5
					4	2	6	5
					4	2	6	5

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 334×6
    Solution:
    334×6 = 2004
    Column vertical calculation:

						3	3	4
✖								6
					2	0	0	4
					2	0	0	4

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 366×5
    Solution:
    366×5 = 1830
    Column vertical calculation:

						3	6	6
✖								5
					1	8	3	0
					1	8	3	0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 241×8
    Solution:
    241×8 = 1928
    Column vertical calculation:

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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 284×9
    Solution:
    284×9 = 2556
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 522×5
    Solution:
    522×5 = 2610
    Column vertical calculation:

						5	2	2
✖								5
					2	6	1	0
					2	6	1	0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 513×3
    Solution:
    513×3 = 1539
    Column vertical calculation:

						5	1	3
✖								3
					1	5	3	9
					1	5	3	9

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>>注：本次最多计算 7 道题。

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