总述：本次共解4题。其中
           ☆算术计算4题

〖1/4算式〗
    作业：求算式 12-6-3-1.5-0.75-0.375-0.1875-0.1875 的值.
    题型：数学计算
    解:
          12-6-3-1.5-0.75-0.375-0.1875-0.1875
        =6-3-1.5-0.75-0.375-0.1875-0.1875
        =3-1.5-0.75-0.375-0.1875-0.1875
        =1.5-0.75-0.375-0.1875-0.1875
        =0.75-0.375-0.1875-0.1875
        =0.375-0.1875-0.1875
        =0.1875-0.1875
        =0
    答案:12-6-3-1.5-0.75-0.375-0.1875-0.1875=0
〖2/4算式〗
    作业：求算式 (0.1×0.1+0.2×0.2+0.3×0.3+0.4×0.4)÷1.5 的值.
    题型：数学计算
    解:
          (0.1×0.1+0.2×0.2+0.3×0.3+0.4×0.4)÷1.5
        =0.3÷1.5
        =0.2
    答案:(0.1×0.1+0.2×0.2+0.3×0.3+0.4×0.4)÷1.5=0.2
〖3/4算式〗
    作业：求算式 (2005×2006×2007×2008+1)÷(2006×2007-1) 的值.
    题型：数学计算
    解:
          (2005×2006×2007×2008+1)÷(2006×2007-1)
        =16209006133681÷(2006×2007-1)
        =16209006133681÷4026041
        =4026041
    答案:(2005×2006×2007×2008+1)÷(2006×2007-1)=4026041
〖4/4算式〗
    作业：求算式 0.01÷(0.02÷(0.03÷0.06))+0.05÷(0.07÷(0.15÷0.21)) 的值.
    题型：数学计算
    解:
          0.01÷(0.02÷(0.03÷0.06))+0.05÷(0.07÷(0.15÷0.21))
        =0.01÷(0.02÷0.5)+0.05÷(0.07÷(0.15÷0.21))
        =0.01÷0.04+0.05÷(0.07÷(0.15÷0.21))
        =0.01÷0.04+0.05÷(0.07÷0.714286)
        =0.01÷0.04+0.05÷0.098
        =0.25+0.05÷0.098
        =0.25+0.510204
        =0.760204
    答案:0.01÷(0.02÷(0.03÷0.06))+0.05÷(0.07÷(0.15÷0.21))=0.760204

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