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

[1/7 Formula]
    Work: Calculate the value of equation (20+90)×25 .
    Question type: Mathematical calculation
    Solution:
          (20+90)×25
        =110×25
        =2750
    Answer:(20+90)×25=2750
[2/7 Formula]
    Work: Calculate the value of equation (100+20)×250 .
    Question type: Mathematical calculation
    Solution:
          (100+20)×250
        =120×250
        =30000
    Answer:(100+20)×250=30000
[3/7 Formula]
    Work: Calculate the value of equation (2+50)×300 .
    Question type: Mathematical calculation
    Solution:
          (2+50)×300
        =52×300
        =15600
    Answer:(2+50)×300=15600
[4/7 Formula]
    Work: Calculate the value of equation (4+50)×1500 .
    Question type: Mathematical calculation
    Solution:
          (4+50)×1500
        =54×1500
        =81000
    Answer:(4+50)×1500=81000
[5/7 Formula]
    Work: Calculate the value of equation 80×(75+30) .
    Question type: Mathematical calculation
    Solution:
          80×(75+30)
        =80×105
        =8400
    Answer:80×(75+30)=8400
[6/7 Formula]
    Work: Calculate the value of equation 800×(40+75) .
    Question type: Mathematical calculation
    Solution:
          800×(40+75)
        =800×115
        =92000
    Answer:800×(40+75)=92000
[7/7 Formula]
    Work: Calculate the value of equation 240×(25+80) .
    Question type: Mathematical calculation
    Solution:
          240×(25+80)
        =240×105
        =25200
    Answer:240×(25+80)=25200

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>>注：本次最多计算 7 道题。

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