Overview: 4 questions will be solved this time.Among them
           ☆4 arithmetic calculations

[1/4 Formula]
    Work: Calculate the value of equation 2011+201.1+20.11+2.011 .
    Question type: Mathematical calculation
    Solution:
          2011+201.1+20.11+2.011
        =2212.1+20.11+2.011
        =2232.21+2.011
        =2234.221
    Answer:2011+201.1+20.11+2.011=2234.221
[2/4 Formula]
    Work: Calculate the value of equation 362×740+361×260 .
    Question type: Mathematical calculation
    Solution:
          362×740+361×260
        =267880+361×260
        =267880+93860
        =361740
    Answer:362×740+361×260=361740
[3/4 Formula]
    Work: Calculate the value of equation 1×2+2×3+3×4+4×5+5×6+6×7+7×8+8×9 .
    Question type: Mathematical calculation
    Solution:
          1×2+2×3+3×4+4×5+5×6+6×7+7×8+8×9
        =2+2×3+3×4+4×5+5×6+6×7+7×8+8×9
        =2+6+3×4+4×5+5×6+6×7+7×8+8×9
        =2+6+12+4×5+5×6+6×7+7×8+8×9
        =2+6+12+20+5×6+6×7+7×8+8×9
        =2+6+12+20+30+6×7+7×8+8×9
        =2+6+12+20+30+42+7×8+8×9
        =2+6+12+20+30+42+56+8×9
        =2+6+12+20+30+42+56+72
        =8+12+20+30+42+56+72
        =20+20+30+42+56+72
        =40+30+42+56+72
        =70+42+56+72
        =112+56+72
        =168+72
        =240
    Answer:1×2+2×3+3×4+4×5+5×6+6×7+7×8+8×9=240
[4/4 Formula]
    Work: Calculate the value of equation 1968×1967+1967×8033 .
    Question type: Mathematical calculation
    Solution:
          1968×1967+1967×8033
        =3871056+1967×8033
        =3871056+15800911
        =19671967
    Answer:1968×1967+1967×8033=19671967

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