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

[1/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 48+23
    Solution:
    48+23 = 71
    Column vertical calculation:

			4	8
➕			21	3
			7	1

[2/7 Formula]
    Work: Calculate the value of equation 9.9+7.8 .
    Question type: Mathematical calculation
    Solution:
          9.9+7.8
        =17.7
    Answer:9.9+7.8=17.7
[3/7 Formula]
    Work: Calculate the value of equation 12.6-7.8 .
    Question type: Mathematical calculation
    Solution:
          12.6-7.8
        =4.8
    Answer:12.6-7.8=4.8
[4/7 Formula]
    Work: Calculate the value of equation 13.2-1.9 .
    Question type: Mathematical calculation
    Solution:
          13.2-1.9
        =11.3
    Answer:13.2-1.9=11.3
[5/7 Formula]
    Work: Calculate the value of equation 6.9+2.7 .
    Question type: Mathematical calculation
    Solution:
          6.9+2.7
        =9.6
    Answer:6.9+2.7=9.6
[6/7 Formula]
    Work: Calculate the value of equation 2.5+11 .
    Question type: Mathematical calculation
    Solution:
          2.5+11
        =13.5
    Answer:2.5+11=13.5
[7/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 63-20
    Solution:
    63-20 = 43
    Column vertical calculation:

			6	3
➖			2	0
			4	3

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>>注：本次最多计算 7 道题。

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