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

[1/7 Formula]
    Work: Calculate the value of equation 28.6-3.9 .
    Question type: Mathematical calculation
    Solution:
          28.6-3.9
        =24.7
    Answer:28.6-3.9=24.7
[2/7 Formula]
    Work: Calculate the value of equation 25.5-4.7 .
    Question type: Mathematical calculation
    Solution:
          25.5-4.7
        =20.8
    Answer:25.5-4.7=20.8
[3/7 Formula]
    Work: Calculate the value of equation 28.4-2.8 .
    Question type: Mathematical calculation
    Solution:
          28.4-2.8
        =25.6
    Answer:28.4-2.8=25.6
[4/7 Formula]
    Work: Calculate the value of equation 29.4-8.7 .
    Question type: Mathematical calculation
    Solution:
          29.4-8.7
        =20.7
    Answer:29.4-8.7=20.7
[5/7 Formula]
    Work: Calculate the value of equation 22.8+4.7 .
    Question type: Mathematical calculation
    Solution:
          22.8+4.7
        =27.5
    Answer:22.8+4.7=27.5
[6/7 Formula]
    Work: Calculate the value of equation 29.4-5.5 .
    Question type: Mathematical calculation
    Solution:
          29.4-5.5
        =23.9
    Answer:29.4-5.5=23.9
[7/7 Formula]
    Work: Calculate the value of equation 23.6+3.7 .
    Question type: Mathematical calculation
    Solution:
          23.6+3.7
        =27.3
    Answer:23.6+3.7=27.3

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>>注：本次最多计算 7 道题。

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