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

[1/7 Formula]
    Work: Calculate the value of equation 12.45-1.35-0.65+2.55 .
    Question type: Mathematical calculation
    Solution:
          12.45-1.35-0.65+2.55
        =11.1-0.65+2.55
        =10.45+2.55
        =13
    Answer:12.45-1.35-0.65+2.55=13
[2/7 Formula]
    Work: Calculate the value of equation 21.32-(6.32+8.3+1.7) .
    Question type: Mathematical calculation
    Solution:
          21.32-(6.32+8.3+1.7)
        =21.32-16.32
        =5
    Answer:21.32-(6.32+8.3+1.7)=5
[3/7 Formula]
    Work: Calculate the value of equation (15.28+28.99)+20.72 .
    Question type: Mathematical calculation
    Solution:
          (15.28+28.99)+20.72
        =44.27+20.72
        =64.99
    Answer:(15.28+28.99)+20.72=64.99
[4/7 Formula]
    Work: Calculate the value of equation 27.3+73.2+72.7+26.8 .
    Question type: Mathematical calculation
    Solution:
          27.3+73.2+72.7+26.8
        =100.5+72.7+26.8
        =173.2+26.8
        =200
    Answer:27.3+73.2+72.7+26.8=200
[5/7 Formula]
    Work: Calculate the value of equation 42.5-22.17-7.83+17.5 .
    Question type: Mathematical calculation
    Solution:
          42.5-22.17-7.83+17.5
        =20.33-7.83+17.5
        =12.5+17.5
        =30
    Answer:42.5-22.17-7.83+17.5=30
[6/7 Formula]
    Work: Calculate the value of equation 3.8+1.37+6.2+12.63 .
    Question type: Mathematical calculation
    Solution:
          3.8+1.37+6.2+12.63
        =5.17+6.2+12.63
        =11.37+12.63
        =24
    Answer:3.8+1.37+6.2+12.63=24
[7/7 Formula]
    Work: Calculate the value of equation 2.51+3.53+0.49-5.4+1.47 .
    Question type: Mathematical calculation
    Solution:
          2.51+3.53+0.49-5.4+1.47
        =6.04+0.49-5.4+1.47
        =6.53-5.4+1.47
        =1.13+1.47
        =2.6
    Answer:2.51+3.53+0.49-5.4+1.47=2.6

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>>注：本次最多计算 7 道题。

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