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

[1/7 Formula]
    Work: Calculate the value of equation 25×(12+20) .
    Question type: Mathematical calculation
    Solution:
          25×(12+20)
        =25×32
        =800
    Answer:25×(12+20)=800
[2/7 Formula]
    Work: Calculate the value of equation 75×(40+70) .
    Question type: Mathematical calculation
    Solution:
          75×(40+70)
        =75×110
        =8250
    Answer:75×(40+70)=8250
[3/7 Formula]
    Work: Calculate the value of equation 60×(5+50) .
    Question type: Mathematical calculation
    Solution:
          60×(5+50)
        =60×55
        =3300
    Answer:60×(5+50)=3300
[4/7 Formula]
    Work: Calculate the value of equation 12×(100+25) .
    Question type: Mathematical calculation
    Solution:
          12×(100+25)
        =12×125
        =1500
    Answer:12×(100+25)=1500
[5/7 Formula]
    Work: Calculate the value of equation 25×(120+100) .
    Question type: Mathematical calculation
    Solution:
          25×(120+100)
        =25×220
        =5500
    Answer:25×(120+100)=5500
[6/7 Formula]
    Work: Calculate the value of equation 15×(2+9) .
    Question type: Mathematical calculation
    Solution:
          15×(2+9)
        =15×11
        =165
    Answer:15×(2+9)=165
[7/7 Formula]
    Work: Calculate the value of equation 20×(20+85) .
    Question type: Mathematical calculation
    Solution:
          20×(20+85)
        =20×105
        =2100
    Answer:20×(20+85)=2100

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>>注：本次最多计算 7 道题。

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