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: 86-23
    Solution:
    86-23 = 63
    Column vertical calculation:

			8	6
➖			2	3
			6	3

[2/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 47-1
    Solution:
    47-1 = 46
    Column vertical calculation:

			4	7
➖				1
			4	6

[3/7 Formula]
    Work: Calculate the value of equation 5.9+13 .
    Question type: Mathematical calculation
    Solution:
          5.9+13
        =18.9
    Answer:5.9+13=18.9
[4/7 Formula]
    Work: Calculate the value of equation 9.3+23 .
    Question type: Mathematical calculation
    Solution:
          9.3+23
        =32.3
    Answer:9.3+23=32.3
[5/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 52-4
    Solution:
    52-4 = 48
    Column vertical calculation:

			1
			5	2
➖				4
			4	8

[6/7 Formula]
    Work: Calculate the value of equation 28.6+2.3 .
    Question type: Mathematical calculation
    Solution:
          28.6+2.3
        =30.9
    Answer:28.6+2.3=30.9
[7/7 Formula]
    Work: Calculate the value of equation 1.7+1.5 .
    Question type: Mathematical calculation
    Solution:
          1.7+1.5
        =3.2
    Answer:1.7+1.5=3.2

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>>注：本次最多计算 7 道题。

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