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

[1/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 117-54
    Solution:
    117-54 = 63
    Column vertical calculation:

			1
			1	1	7
➖				5	4
			0	6	3

[2/7 Formula]
    Work: Calculate the value of equation 17.2-3 .
    Question type: Mathematical calculation
    Solution:
          17.2-3
        =14.2
    Answer:17.2-3=14.2
[3/7 Formula]
    Work: Calculate the value of equation 2.82-4 .
    Question type: Mathematical calculation
    Solution:
          2.82-4
        =-1.18
    Answer:2.82-4=-1.18
[4/7 Formula]
    Work: Calculate the value of equation 17.1-5.3 .
    Question type: Mathematical calculation
    Solution:
          17.1-5.3
        =11.8
    Answer:17.1-5.3=11.8
[5/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 19-8
    Solution:
    19-8 = 11
    Column vertical calculation:

			1	9
➖				8
			1	1

[6/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 7+72
    Solution:
    7+72 = 79
    Column vertical calculation:

				7
➕			7	2
			7	9

[7/7 Formula]
    Work: Calculate the value of equation 8.88+2.1 .
    Question type: Mathematical calculation
    Solution:
          8.88+2.1
        =10.98
    Answer:8.88+2.1=10.98

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>>注：本次最多计算 7 道题。

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