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

[1/7 Formula]
    Work: Calculate the value of equation 3.7+2.8+7.2 .
    Question type: Mathematical calculation
    Solution:
          3.7+2.8+7.2
        =6.5+7.2
        =13.7
    Answer:3.7+2.8+7.2=13.7
[2/7 Formula]
    Work: Calculate the value of equation 6.2+4.5+5.5+3.8 .
    Question type: Mathematical calculation
    Solution:
          6.2+4.5+5.5+3.8
        =10.7+5.5+3.8
        =16.2+3.8
        =20
    Answer:6.2+4.5+5.5+3.8=20
[3/7 Formula]
    Work: Calculate the value of equation 15-0.35-0.65 .
    Question type: Mathematical calculation
    Solution:
          15-0.35-0.65
        =14.65-0.65
        =14
    Answer:15-0.35-0.65=14
[4/7 Formula]
    Work: Calculate the value of equation 16.5-7.2-2.8 .
    Question type: Mathematical calculation
    Solution:
          16.5-7.2-2.8
        =9.3-2.8
        =6.5
    Answer:16.5-7.2-2.8=6.5
[5/7 Formula]
    Work: Calculate the value of equation 2.78+0.3+1.7 .
    Question type: Mathematical calculation
    Solution:
          2.78+0.3+1.7
        =3.08+1.7
        =4.78
    Answer:2.78+0.3+1.7=4.78
[6/7 Formula]
    Work: Calculate the value of equation 1.9+2.07+0.93+1.1 .
    Question type: Mathematical calculation
    Solution:
          1.9+2.07+0.93+1.1
        =3.97+0.93+1.1
        =4.9+1.1
        =6
    Answer:1.9+2.07+0.93+1.1=6
[7/7 Formula]
    Work: Calculate the value of equation 20-9.85-7.15 .
    Question type: Mathematical calculation
    Solution:
          20-9.85-7.15
        =10.15-7.15
        =3
    Answer:20-9.85-7.15=3

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>>注：本次最多计算 7 道题。

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