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

[1/7 Formula]
    Work: Calculate the value of equation 672-36-64 .
    Question type: Mathematical calculation
    Solution:
          672-36-64
        =636-64
        =572
    Answer:672-36-64=572
[2/7 Formula]
    Work: Calculate the value of equation 6072-1036-164 .
    Question type: Mathematical calculation
    Solution:
          6072-1036-164
        =5036-164
        =4872
    Answer:6072-1036-164=4872
[3/7 Formula]
    Work: Calculate the value of equation 528-53-47 .
    Question type: Mathematical calculation
    Solution:
          528-53-47
        =475-47
        =428
    Answer:528-53-47=428
[4/7 Formula]
    Work: Calculate the value of equation 545-167-145 .
    Question type: Mathematical calculation
    Solution:
          545-167-145
        =378-145
        =233
    Answer:545-167-145=233
[5/7 Formula]
    Work: Calculate the value of equation 13+46+55+54+87 .
    Question type: Mathematical calculation
    Solution:
          13+46+55+54+87
        =59+55+54+87
        =114+54+87
        =168+87
        =255
    Answer:13+46+55+54+87=255
[6/7 Formula]
    Work: Calculate the value of equation 5+137+45+63+50 .
    Question type: Mathematical calculation
    Solution:
          5+137+45+63+50
        =142+45+63+50
        =187+63+50
        =250+50
        =300
    Answer:5+137+45+63+50=300
[7/7 Formula]
    Work: Calculate the value of equation 487-187-139-61 .
    Question type: Mathematical calculation
    Solution:
          487-187-139-61
        =300-139-61
        =161-61
        =100
    Answer:487-187-139-61=100

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>>注：本次最多计算 7 道题。

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