Overview: 1 questions will be solved this time.Among them
           ☆1 integer calculations

[1/1 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 10*10
    Solution:
    10*10 = 100
    Column vertical calculation:

							1	0
✖							1	0
							0	0
						1	0
						1	0	0

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