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

[1/7 Formula]
    Work: Calculate the value of equation 18.3+4.7-2.81-7.19 .
    Question type: Mathematical calculation
    Solution:
          18.3+4.7-2.81-7.19
        =23-2.81-7.19
        =20.19-7.19
        =13
    Answer:18.3+4.7-2.81-7.19=13
[2/7 Formula]
    Work: Calculate the value of equation 17.5-3.56-6.44 .
    Question type: Mathematical calculation
    Solution:
          17.5-3.56-6.44
        =13.94-6.44
        =7.5
    Answer:17.5-3.56-6.44=7.5
[3/7 Formula]
    Work: Calculate the value of equation 120.39-87.62-12.39 .
    Question type: Mathematical calculation
    Solution:
          120.39-87.62-12.39
        =32.77-12.39
        =20.38
    Answer:120.39-87.62-12.39=20.38
[4/7 Formula]
    Work: Calculate the value of equation 8.53-2.72-3.28+3.47 .
    Question type: Mathematical calculation
    Solution:
          8.53-2.72-3.28+3.47
        =5.81-3.28+3.47
        =2.53+3.47
        =6
    Answer:8.53-2.72-3.28+3.47=6
[5/7 Formula]
    Work: Calculate the value of equation 8.59-3.68-3.59+2.68 .
    Question type: Mathematical calculation
    Solution:
          8.59-3.68-3.59+2.68
        =4.91-3.59+2.68
        =1.32+2.68
        =4
    Answer:8.59-3.68-3.59+2.68=4
[6/7 Formula]
    Work: Calculate the value of equation 93.77-(13.77+5.9) .
    Question type: Mathematical calculation
    Solution:
          93.77-(13.77+5.9)
        =93.77-19.67
        =74.1
    Answer:93.77-(13.77+5.9)=74.1
[7/7 Formula]
    Work: Calculate the value of equation (6.125-2.75)-(1.25-0.875) .
    Question type: Mathematical calculation
    Solution:
          (6.125-2.75)-(1.25-0.875)
        =3.375-(1.25-0.875)
        =3.375-0.375
        =3
    Answer:(6.125-2.75)-(1.25-0.875)=3

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>>注：本次最多计算 7 道题。

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