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: 78×52
    Solution:
    78×52 = 4056
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 62×94
    Solution:
    62×94 = 5828
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 57×53
    Solution:
    57×53 = 3021
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 84×56
    Solution:
    84×56 = 4704
    Column vertical calculation:

							8	4
✖							5	6
						5	0	4
					4	2	0
					4	7	0	4

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 86×67
    Solution:
    86×67 = 5762
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 77×84
    Solution:
    77×84 = 6468
    Column vertical calculation:

							7	7
✖							8	4
						3	0	8
					6	1	6
					6	4	6	8

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 56×28
    Solution:
    56×28 = 1568
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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