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

[1/7 Formula]
    Work: Calculate the value of equation (20+900)×450 .
    Question type: Mathematical calculation
    Solution:
          (20+900)×450
        =920×450
        =414000
    Answer:(20+900)×450=414000
[2/7 Formula]
    Work: Calculate the value of equation 450×(20+9) .
    Question type: Mathematical calculation
    Solution:
          450×(20+9)
        =450×29
        =13050
    Answer:450×(20+9)=13050
[3/7 Formula]
    Work: Calculate the value of equation 450×(2+1000) .
    Question type: Mathematical calculation
    Solution:
          450×(2+1000)
        =450×1002
        =450900
    Answer:450×(2+1000)=450900
[4/7 Formula]
    Work: Calculate the value of equation 40×(225+800) .
    Question type: Mathematical calculation
    Solution:
          40×(225+800)
        =40×1025
        =41000
    Answer:40×(225+800)=41000
[5/7 Formula]
    Work: Calculate the value of equation 400×(225+80) .
    Question type: Mathematical calculation
    Solution:
          400×(225+80)
        =400×305
        =122000
    Answer:400×(225+80)=122000
[6/7 Formula]
    Work: Calculate the value of equation (225+90)×400 .
    Question type: Mathematical calculation
    Solution:
          (225+90)×400
        =315×400
        =126000
    Answer:(225+90)×400=126000
[7/7 Formula]
    Work: Calculate the value of equation (225+700)×40 .
    Question type: Mathematical calculation
    Solution:
          (225+700)×40
        =925×40
        =37000
    Answer:(225+700)×40=37000

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>>注：本次最多计算 7 道题。

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