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

[1/7 Formula]
    Work: Calculate the value of equation 23.1+56.9-2.3 .
    Question type: Mathematical calculation
    Solution:
          23.1+56.9-2.3
        =80-2.3
        =77.7
    Answer:23.1+56.9-2.3=77.7
[2/7 Formula]
    Work: Calculate the value of equation 65.4+1.6-1.6 .
    Question type: Mathematical calculation
    Solution:
          65.4+1.6-1.6
        =67-1.6
        =65.4
    Answer:65.4+1.6-1.6=65.4
[3/7 Formula]
    Work: Calculate the value of equation 76.12+453.24-0.16 .
    Question type: Mathematical calculation
    Solution:
          76.12+453.24-0.16
        =529.36-0.16
        =529.2
    Answer:76.12+453.24-0.16=529.2
[4/7 Formula]
    Work: Calculate the value of equation 18.2+2.5-1.4 .
    Question type: Mathematical calculation
    Solution:
          18.2+2.5-1.4
        =20.7-1.4
        =19.3
    Answer:18.2+2.5-1.4=19.3
[5/7 Formula]
    Work: Calculate the value of equation 278.6+1.9-4.03 .
    Question type: Mathematical calculation
    Solution:
          278.6+1.9-4.03
        =280.5-4.03
        =276.47
    Answer:278.6+1.9-4.03=276.47
[6/7 Formula]
    Work: Calculate the value of equation 7.25+12.89-5.8 .
    Question type: Mathematical calculation
    Solution:
          7.25+12.89-5.8
        =20.14-5.8
        =14.34
    Answer:7.25+12.89-5.8=14.34
[7/7 Formula]
    Work: Calculate the value of equation 2.1+91.7-3.23 .
    Question type: Mathematical calculation
    Solution:
          2.1+91.7-3.23
        =93.8-3.23
        =90.57
    Answer:2.1+91.7-3.23=90.57

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>>注：本次最多计算 7 道题。

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