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

[1/4 Formula]
    Work: Calculate the value of equation 12+34+56 .
    Question type: Mathematical calculation
    Solution:
          12+34+56
        =46+56
        =102
    Answer:12+34+56=102
[2/4 Formula]
    Work: Calculate the value of equation 12+34*56 .
    Question type: Mathematical calculation
    Solution:
          12+34*56
        =12+1904
        =1916
    Answer:12+34*56=1916
[3/4 Formula]
    Work: Calculate the value of equation 12-34+56 .
    Question type: Mathematical calculation
    Solution:
          12-34+56
        =-22+56
        =34
    Answer:12-34+56=34
[4/4 Formula]
    Work: Calculate the value of equation 12-34-56 .
    Question type: Mathematical calculation
    Solution:
          12-34-56
        =-22-56
        =-78
    Answer:12-34-56=-78

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