Overview: 4 questions will be solved this time.Among them
           ☆4 arithmetic calculations

[1/4 Formula]
    Work: Calculate the value of equation (624+12×18)÷28 .
    Question type: Mathematical calculation
    Solution:
          (624+12×18)÷28
        =840÷28
        =30
    Answer:(624+12×18)÷28=30
[2/4 Formula]
    Work: Calculate the value of equation 25×22-280÷35 .
    Question type: Mathematical calculation
    Solution:
          25×22-280÷35
        =550-280÷35
        =550-8
        =542
    Answer:25×22-280÷35=542
[3/4 Formula]
    Work: Calculate the value of equation 275+25×(400-291) .
    Question type: Mathematical calculation
    Solution:
          275+25×(400-291)
        =275+25×109
        =275+2725
        =3000
    Answer:275+25×(400-291)=3000
[4/4 Formula]
    Work: Calculate the value of equation 85×(95-1440÷24) .
    Question type: Mathematical calculation
    Solution:
          85×(95-1440÷24)
        =85×35
        =2975
    Answer:85×(95-1440÷24)=2975

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