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

[1/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 60-40
    Solution:
    60-40 = 20
    Column vertical calculation:

			6	0
➖			4	0
			2	0

[2/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 96-62
    Solution:
    96-62 = 34
    Column vertical calculation:

			9	6
➖			6	2
			3	4

[3/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 57-56
    Solution:
    57-56 = 1
    Column vertical calculation:

			5	7
➖			5	6
			0	1

[4/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 85-45
    Solution:
    85-45 = 40
    Column vertical calculation:

			8	5
➖			4	5
			4	0

[5/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 56-33
    Solution:
    56-33 = 23
    Column vertical calculation:

			5	6
➖			3	3
			2	3

[6/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 76-22
    Solution:
    76-22 = 54
    Column vertical calculation:

			7	6
➖			2	2
			5	4

[7/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 95-30
    Solution:
    95-30 = 65
    Column vertical calculation:

			9	5
➖			3	0
			6	5

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>>注：本次最多计算 7 道题。

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