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: 5×213
    Solution:
    5×213 = 1065
    Column vertical calculation:

								5
✖						2	1	3
							1	5
							5
					1	0
					1	0	6	5

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 7×713
    Solution:
    7×713 = 4991
    Column vertical calculation:

								7
✖						7	1	3
							2	1
							7
					4	9
					4	9	9	1

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 5×572
    Solution:
    5×572 = 2860
    Column vertical calculation:

								5
✖						5	7	2
							1	0
						3	5
					2	5
					2	8	6	0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 770×5
    Solution:
    770×5 = 3850
    Column vertical calculation:

						7	7	0
✖								5
					3	8	5	0
					3	8	5	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 6×839
    Solution:
    6×839 = 5034
    Column vertical calculation:

								6
✖						8	3	9
							5	4
						1	8
					4	8
					5	0	3	4

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 3×241
    Solution:
    3×241 = 723
    Column vertical calculation:

								3
✖						2	4	1
								3
						1	2
						6
						7	2	3

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 894×7
    Solution:
    894×7 = 6258
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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