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

[1/7 Formula]
    Work: Calculate the value of equation 2.19-2.01 .
    Question type: Mathematical calculation
    Solution:
          2.19-2.01
        =0.18
    Answer:2.19-2.01=0.18
[2/7 Formula]
    Work: Calculate the value of equation 4.01-0.02 .
    Question type: Mathematical calculation
    Solution:
          4.01-0.02
        =3.99
    Answer:4.01-0.02=3.99
[3/7 Formula]
    Work: Calculate the value of equation 5.66-2.99 .
    Question type: Mathematical calculation
    Solution:
          5.66-2.99
        =2.67
    Answer:5.66-2.99=2.67
[4/7 Formula]
    Work: Calculate the value of equation 20.098-1.564 .
    Question type: Mathematical calculation
    Solution:
          20.098-1.564
        =18.534
    Answer:20.098-1.564=18.534
[5/7 Formula]
    Work: Calculate the value of equation 24.2-5.3 .
    Question type: Mathematical calculation
    Solution:
          24.2-5.3
        =18.9
    Answer:24.2-5.3=18.9
[6/7 Formula]
    Work: Calculate the value of equation 78.03-2.19 .
    Question type: Mathematical calculation
    Solution:
          78.03-2.19
        =75.84
    Answer:78.03-2.19=75.84
[7/7 Formula]
    Work: Calculate the value of equation 23.45-21.24 .
    Question type: Mathematical calculation
    Solution:
          23.45-21.24
        =2.21
    Answer:23.45-21.24=2.21

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>>注：本次最多计算 7 道题。

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