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: 68×93
    Solution:
    68×93 = 6324
    Column vertical calculation:

							6	8
✖							9	3
						2	0	4
					6	1	2
					6	3	2	4

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 43×29
    Solution:
    43×29 = 1247
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 27×76
    Solution:
    27×76 = 2052
    Column vertical calculation:

							2	7
✖							7	6
						1	6	2
					1	8	9
					2	0	5	2

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 64×62
    Solution:
    64×62 = 3968
    Column vertical calculation:

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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 83×83
    Solution:
    83×83 = 6889
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 69×74
    Solution:
    69×74 = 5106
    Column vertical calculation:

							6	9
✖							7	4
						2	7	6
					4	8	3
					5	1	0	6

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 48×46
    Solution:
    48×46 = 2208
    Column vertical calculation:

							4	8
✖							4	6
						2	8	8
					1	9	2
					2	2	0	8

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>>注：本次最多计算 7 道题。

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