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: 82-69
    Solution:
    82-69 = 13
    Column vertical calculation:

			1
			8	2
➖			6	9
			1	3

[2/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 76-54
    Solution:
    76-54 = 22
    Column vertical calculation:

			7	6
➖			5	4
			2	2

[3/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 96-45
    Solution:
    96-45 = 51
    Column vertical calculation:

			9	6
➖			4	5
			5	1

[4/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 26-9
    Solution:
    26-9 = 17
    Column vertical calculation:

			1
			2	6
➖				9
			1	7

[5/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 93-74
    Solution:
    93-74 = 19
    Column vertical calculation:

			1
			9	3
➖			7	4
			1	9

[6/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 59-33
    Solution:
    59-33 = 26
    Column vertical calculation:

			5	9
➖			3	3
			2	6

[7/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 84-52
    Solution:
    84-52 = 32
    Column vertical calculation:

			8	4
➖			5	2
			3	2

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>>注：本次最多计算 7 道题。

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