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

[1/7 Formula]
    Work: Calculate the value of equation 12×7×5 .
    Question type: Mathematical calculation
    Solution:
          12×7×5
        =84×5
        =420
    Answer:12×7×5=420
[2/7 Formula]
    Work: Calculate the value of equation 25×65×40 .
    Question type: Mathematical calculation
    Solution:
          25×65×40
        =1625×40
        =65000
    Answer:25×65×40=65000
[3/7 Formula]
    Work: Calculate the value of equation 5×87×20 .
    Question type: Mathematical calculation
    Solution:
          5×87×20
        =435×20
        =8700
    Answer:5×87×20=8700
[4/7 Formula]
    Work: Calculate the value of equation 100×31×10 .
    Question type: Mathematical calculation
    Solution:
          100×31×10
        =3100×10
        =31000
    Answer:100×31×10=31000
[5/7 Formula]
    Work: Calculate the value of equation 4×66×15 .
    Question type: Mathematical calculation
    Solution:
          4×66×15
        =264×15
        =3960
    Answer:4×66×15=3960
[6/7 Formula]
    Work: Calculate the value of equation 5×64×2 .
    Question type: Mathematical calculation
    Solution:
          5×64×2
        =320×2
        =640
    Answer:5×64×2=640
[7/7 Formula]
    Work: Calculate the value of equation 3×14×10 .
    Question type: Mathematical calculation
    Solution:
          3×14×10
        =42×10
        =420
    Answer:3×14×10=420

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>>注：本次最多计算 7 道题。

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