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

[1/7 Formula]
    Work: Calculate the value of equation 7.4+19 .
    Question type: Mathematical calculation
    Solution:
          7.4+19
        =26.4
    Answer:7.4+19=26.4
[2/7 Formula]
    Work: Calculate the value of equation 18.3+13 .
    Question type: Mathematical calculation
    Solution:
          18.3+13
        =31.3
    Answer:18.3+13=31.3
[3/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 106-72
    Solution:
    106-72 = 34
    Column vertical calculation:

			1
			1	0	6
➖				7	2
			0	3	4

[4/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 59-26
    Solution:
    59-26 = 33
    Column vertical calculation:

			5	9
➖			2	6
			3	3

[5/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 47-23
    Solution:
    47-23 = 24
    Column vertical calculation:

			4	7
➖			2	3
			2	4

[6/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 67-11
    Solution:
    67-11 = 56
    Column vertical calculation:

			6	7
➖			1	1
			5	6

[7/7 Formula]
    Work: Calculate the value of equation 86.7-17.2 .
    Question type: Mathematical calculation
    Solution:
          86.7-17.2
        =69.5
    Answer:86.7-17.2=69.5

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>>注：本次最多计算 7 道题。

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