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: 8×650
    Solution:
    8×650 = 5200
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 370×6
    Solution:
    370×6 = 2220
    Column vertical calculation:

						3	7	0
✖								6
					2	2	2	0
					2	2	2	0

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 2×245
    Solution:
    2×245 = 490
    Column vertical calculation:

								2
✖						2	4	5
							1	0
							8
						4
						4	9	0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 8×840
    Solution:
    8×840 = 6720
    Column vertical calculation:

								8
✖						8	4	0
								0
						3	2
					6	4
					6	7	2	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 347×4
    Solution:
    347×4 = 1388
    Column vertical calculation:

						3	4	7
✖								4
					1	3	8	8
					1	3	8	8

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 9×145
    Solution:
    9×145 = 1305
    Column vertical calculation:

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

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 6×812
    Solution:
    6×812 = 4872
    Column vertical calculation:

								6
✖						8	1	2
							1	2
							6
					4	8
					4	8	7	2

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>>注：本次最多计算 7 道题。

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