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: 965×9
    Solution:
    965×9 = 8685
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 2×831
    Solution:
    2×831 = 1662
    Column vertical calculation:

								2
✖						8	3	1
								2
							6
					1	6
					1	6	6	2

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 8×456
    Solution:
    8×456 = 3648
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 4×324
    Solution:
    4×324 = 1296
    Column vertical calculation:

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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 9×918
    Solution:
    9×918 = 8262
    Column vertical calculation:

								9
✖						9	1	8
							7	2
							9
					8	1
					8	2	6	2

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 8×174
    Solution:
    8×174 = 1392
    Column vertical calculation:

								8
✖						1	7	4
							3	2
						5	6
						8
					1	3	9	2

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 9×150
    Solution:
    9×150 = 1350
    Column vertical calculation:

								9
✖						1	5	0
								0
						4	5
						9
					1	3	5	0

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>>注：本次最多计算 7 道题。

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