Overview: 7 questions will be solved this time.Among them
           ☆7 integer calculations

[1/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 56+38
    Solution:
    56+38 = 94
    Column vertical calculation:

			5	6
➕			31	8
			9	4

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 5*7
    Solution:
    5*7 = 35
    Column vertical calculation:

						5
✖						7
					3	5
					3	5

[3/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 48-25
    Solution:
    48-25 = 23
    Column vertical calculation:

			4	8
➖			2	5
			2	3

[4/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 68+25
    Solution:
    68+25 = 93
    Column vertical calculation:

			6	8
➕			21	5
			9	3

[5/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 384+57
    Solution:
    384+57 = 441
    Column vertical calculation:

			3	8	4
➕			1	51	7
			4	4	1

[6/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 777-79
    Solution:
    777-79 = 698
    Column vertical calculation:

			1	1
			7	7	7
➖				7	9
			6	9	8

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 62*8
    Solution:
    62*8 = 496
    Column vertical calculation:

						6	2
✖							8
					4	9	6
					4	9	6

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>>注：本次最多计算 7 道题。

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