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

[1/7 Formula]
    Work: Calculate the value of equation 628-53-47 .
    Question type: Mathematical calculation
    Solution:
          628-53-47
        =575-47
        =528
    Answer:628-53-47=528
[2/7 Formula]
    Work: Calculate the value of equation 645-167-145 .
    Question type: Mathematical calculation
    Solution:
          645-167-145
        =478-145
        =333
    Answer:645-167-145=333
[3/7 Formula]
    Work: Calculate the value of equation 587-187-139-61 .
    Question type: Mathematical calculation
    Solution:
          587-187-139-61
        =400-139-61
        =261-61
        =200
    Answer:587-187-139-61=200
[4/7 Formula]
    Work: Calculate the value of equation 269-25-25-50 .
    Question type: Mathematical calculation
    Solution:
          269-25-25-50
        =244-25-50
        =219-50
        =169
    Answer:269-25-25-50=169
[5/7 Formula]
    Work: Calculate the value of equation 745-180-245 .
    Question type: Mathematical calculation
    Solution:
          745-180-245
        =565-245
        =320
    Answer:745-180-245=320
[6/7 Formula]
    Work: Calculate the value of equation 255-(230-45) .
    Question type: Mathematical calculation
    Solution:
          255-(230-45)
        =255-185
        =70
    Answer:255-(230-45)=70
[7/7 Formula]
    Work: Calculate the value of equation 372-(36-28) .
    Question type: Mathematical calculation
    Solution:
          372-(36-28)
        =372-8
        =364
    Answer:372-(36-28)=364

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>>注：本次最多计算 7 道题。

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