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

[1/7 Formula]
    Work: Calculate the value of equation 28+50-20 .
    Question type: Mathematical calculation
    Solution:
          28+50-20
        =78-20
        =58
    Answer:28+50-20=58
[2/7 Formula]
    Work: Calculate the value of equation 57+(25-17) .
    Question type: Mathematical calculation
    Solution:
          57+(25-17)
        =57+8
        =65
    Answer:57+(25-17)=65
[3/7 Formula]
    Work: Calculate the value of equation 71-(25+15) .
    Question type: Mathematical calculation
    Solution:
          71-(25+15)
        =71-40
        =31
    Answer:71-(25+15)=31
[4/7 Formula]
    Work: Calculate the value of equation 62-23+8 .
    Question type: Mathematical calculation
    Solution:
          62-23+8
        =39+8
        =47
    Answer:62-23+8=47
[5/7 Formula]
    Work: Calculate the value of equation 56-11+15 .
    Question type: Mathematical calculation
    Solution:
          56-11+15
        =45+15
        =60
    Answer:56-11+15=60
[6/7 Formula]
    Work: Calculate the value of equation 20-(51-23) .
    Question type: Mathematical calculation
    Solution:
          20-(51-23)
        =20-28
        =-8
    Answer:20-(51-23)=-8
[7/7 Formula]
    Work: Calculate the value of equation 83-(32+24) .
    Question type: Mathematical calculation
    Solution:
          83-(32+24)
        =83-56
        =27
    Answer:83-(32+24)=27

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>>注：本次最多计算 7 道题。

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