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

[1/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 97-22
    Solution:
    97-22 = 75
    Column vertical calculation:

			9	7
➖			2	2
			7	5

[2/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 58-17
    Solution:
    58-17 = 41
    Column vertical calculation:

			5	8
➖			1	7
			4	1

[3/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 64+32
    Solution:
    64+32 = 96
    Column vertical calculation:

			6	4
➕			3	2
			9	6

[4/7 Formula]
    Work: Calculate the value of equation 3.5+6.5 .
    Question type: Mathematical calculation
    Solution:
          3.5+6.5
        =10
    Answer:3.5+6.5=10
[5/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 58+7
    Solution:
    58+7 = 65
    Column vertical calculation:

			5	8
➕			1	7
			6	5

[6/7 Formula]
    Work: Calculate the value of equation 9.5-3.1 .
    Question type: Mathematical calculation
    Solution:
          9.5-3.1
        =6.4
    Answer:9.5-3.1=6.4
[7/7 Formula]
    Work: Calculate the value of equation 2.3+9.1 .
    Question type: Mathematical calculation
    Solution:
          2.3+9.1
        =11.4
    Answer:2.3+9.1=11.4

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>>注：本次最多计算 7 道题。

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