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

[1/7 Formula]
    Work: Calculate the value of equation 2.189-1.907 .
    Question type: Mathematical calculation
    Solution:
          2.189-1.907
        =0.282
    Answer:2.189-1.907=0.282
[2/7 Formula]
    Work: Calculate the value of equation 23.8-13.8 .
    Question type: Mathematical calculation
    Solution:
          23.8-13.8
        =10
    Answer:23.8-13.8=10
[3/7 Formula]
    Work: Calculate the value of equation 189.34-4.76 .
    Question type: Mathematical calculation
    Solution:
          189.34-4.76
        =184.58
    Answer:189.34-4.76=184.58
[4/7 Formula]
    Work: Calculate the value of equation 2.467-1.007 .
    Question type: Mathematical calculation
    Solution:
          2.467-1.007
        =1.46
    Answer:2.467-1.007=1.46
[5/7 Formula]
    Work: Calculate the value of equation 4.5-4.4 .
    Question type: Mathematical calculation
    Solution:
          4.5-4.4
        =0.1
    Answer:4.5-4.4=0.1
[6/7 Formula]
    Work: Calculate the value of equation 66.6-2.1 .
    Question type: Mathematical calculation
    Solution:
          66.6-2.1
        =64.5
    Answer:66.6-2.1=64.5
[7/7 Formula]
    Work: Calculate the value of equation 65.7-12.1 .
    Question type: Mathematical calculation
    Solution:
          65.7-12.1
        =53.6
    Answer:65.7-12.1=53.6

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>>注：本次最多计算 7 道题。

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