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

[1/7 Formula]
    Work: Calculate the value of equation 105×2.1-5×2.1 .
    Question type: Mathematical calculation
    Solution:
          105×2.1-5×2.1
        =220.5-5×2.1
        =220.5-10.5
        =210
    Answer:105×2.1-5×2.1=210
[2/7 Formula]
    Work: Calculate the value of equation 45×15.8+55×15.8 .
    Question type: Mathematical calculation
    Solution:
          45×15.8+55×15.8
        =711+55×15.8
        =711+869
        =1580
    Answer:45×15.8+55×15.8=1580
[3/7 Formula]
    Work: Calculate the value of equation 3.8×4×0.25 .
    Question type: Mathematical calculation
    Solution:
          3.8×4×0.25
        =15.2×0.25
        =3.8
    Answer:3.8×4×0.25=3.8
[4/7 Formula]
    Work: Calculate the value of equation 72×0.125+10.4 .
    Question type: Mathematical calculation
    Solution:
          72×0.125+10.4
        =9+10.4
        =19.4
    Answer:72×0.125+10.4=19.4
[5/7 Formula]
    Work: Calculate the value of equation 2.4×25+3.45 .
    Question type: Mathematical calculation
    Solution:
          2.4×25+3.45
        =60+3.45
        =63.45
    Answer:2.4×25+3.45=63.45
[6/7 Formula]
    Work: Calculate the value of equation 0.5×102 .
    Question type: Mathematical calculation
    Solution:
          0.5×102
        =51
    Answer:0.5×102=51
[7/7 Formula]
    Work: Calculate the value of equation 1.25×7×0.8 .
    Question type: Mathematical calculation
    Solution:
          1.25×7×0.8
        =8.75×0.8
        =7
    Answer:1.25×7×0.8=7

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>>注：本次最多计算 7 道题。

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