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: 4×827
    Solution:
    4×827 = 3308
    Column vertical calculation:

								4
✖						8	2	7
							2	8
							8
					3	2
					3	3	0	8

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 3×471
    Solution:
    3×471 = 1413
    Column vertical calculation:

								3
✖						4	7	1
								3
						2	1
					1	2
					1	4	1	3

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 351×4
    Solution:
    351×4 = 1404
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 497×9
    Solution:
    497×9 = 4473
    Column vertical calculation:

						4	9	7
✖								9
					4	4	7	3
					4	4	7	3

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 2×203
    Solution:
    2×203 = 406
    Column vertical calculation:

								2
✖						2	0	3
								6
							0
						4
						4	0	6

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 5×104
    Solution:
    5×104 = 520
    Column vertical calculation:

								5
✖						1	0	4
							2	0
							0
						5
						5	2	0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 2×268
    Solution:
    2×268 = 536
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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