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: 84-76
    Solution:
    84-76 = 8
    Column vertical calculation:

			1
			8	4
➖			7	6
			0	8

[2/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 92-14
    Solution:
    92-14 = 78
    Column vertical calculation:

			1
			9	2
➖			1	4
			7	8

[3/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 91-26
    Solution:
    91-26 = 65
    Column vertical calculation:

			1
			9	1
➖			2	6
			6	5

[4/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 78-20
    Solution:
    78-20 = 58
    Column vertical calculation:

			7	8
➖			2	0
			5	8

[5/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 64-32
    Solution:
    64-32 = 32
    Column vertical calculation:

			6	4
➖			3	2
			3	2

[6/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 82-3
    Solution:
    82-3 = 79
    Column vertical calculation:

			1
			8	2
➖				3
			7	9

[7/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 99-8
    Solution:
    99-8 = 91
    Column vertical calculation:

			9	9
➖				8
			9	1

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>>注：本次最多计算 7 道题。

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