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: 58×44
    Solution:
    58×44 = 2552
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 98×97
    Solution:
    98×97 = 9506
    Column vertical calculation:

							9	8
✖							9	7
						6	8	6
					8	8	2
					9	5	0	6

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 93×82
    Solution:
    93×82 = 7626
    Column vertical calculation:

							9	3
✖							8	2
						1	8	6
					7	4	4
					7	6	2	6

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 74×35
    Solution:
    74×35 = 2590
    Column vertical calculation:

							7	4
✖							3	5
						3	7	0
					2	2	2
					2	5	9	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 76×23
    Solution:
    76×23 = 1748
    Column vertical calculation:

							7	6
✖							2	3
						2	2	8
					1	5	2
					1	7	4	8

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 84×57
    Solution:
    84×57 = 4788
    Column vertical calculation:

							8	4
✖							5	7
						5	8	8
					4	2	0
					4	7	8	8

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 43×68
    Solution:
    43×68 = 2924
    Column vertical calculation:

							4	3
✖							6	8
						3	4	4
					2	5	8
					2	9	2	4

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>>注：本次最多计算 7 道题。

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