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

[1/7 Formula]
    Work: Calculate the value of equation 869-(253-31) .
    Question type: Mathematical calculation
    Solution:
          869-(253-31)
        =869-222
        =647
    Answer:869-(253-31)=647
[2/7 Formula]
    Work: Calculate the value of equation 972-(36-28) .
    Question type: Mathematical calculation
    Solution:
          972-(36-28)
        =972-8
        =964
    Answer:972-(36-28)=964
[3/7 Formula]
    Work: Calculate the value of equation 932-(136-68) .
    Question type: Mathematical calculation
    Solution:
          932-(136-68)
        =932-68
        =864
    Answer:932-(136-68)=864
[4/7 Formula]
    Work: Calculate the value of equation 856-(128-44) .
    Question type: Mathematical calculation
    Solution:
          856-(128-44)
        =856-84
        =772
    Answer:856-(128-44)=772
[5/7 Formula]
    Work: Calculate the value of equation 657-(135-43) .
    Question type: Mathematical calculation
    Solution:
          657-(135-43)
        =657-92
        =565
    Answer:657-(135-43)=565
[6/7 Formula]
    Work: Calculate the value of equation 965-(230-35) .
    Question type: Mathematical calculation
    Solution:
          965-(230-35)
        =965-195
        =770
    Answer:965-(230-35)=770
[7/7 Formula]
    Work: Calculate the value of equation 962-(36-38) .
    Question type: Mathematical calculation
    Solution:
          962-(36-38)
        =962-(-2)
        =964
    Answer:962-(36-38)=964

---

>>注：本次最多计算 7 道题。

Your problem has not been solved here? Please go to the Hot Problems section！