总述：本次共解1题。其中
           ☆算术计算1题

〖1/1算式〗
    作业：求算式 (4+0.2)×(4+0.2)×0.1×12+(4+0.2)×(6.5+0.2)×0.1×7+(3.4+0.2)×(4+0.2)×0.1×14+(3.4+0.2)×(6.5+0.2)×0.1×5 的值.
    题型：数学计算
    解:
          (4+0.2)×(4+0.2)×0.1×12+(4+0.2)×(6.5+0.2)×0.1×7+(3.4+0.2)×(4+0.2)×0.1×14+(3.4+0.2)×(6.5+0.2)×0.1×5
        =4.2×(4+0.2)×0.1×12+(4+0.2)×(6.5+0.2)×0.1×7+(3.4+0.2)×(4+0.2)×0.1×14+(3.4+0.2)×(6.5+0.2)×0.1×5
        =4.2×4.2×0.1×12+(4+0.2)×(6.5+0.2)×0.1×7+(3.4+0.2)×(4+0.2)×0.1×14+(3.4+0.2)×(6.5+0.2)×0.1×5
        =4.2×4.2×0.1×12+4.2×(6.5+0.2)×0.1×7+(3.4+0.2)×(4+0.2)×0.1×14+(3.4+0.2)×(6.5+0.2)×0.1×5
        =4.2×4.2×0.1×12+4.2×6.7×0.1×7+(3.4+0.2)×(4+0.2)×0.1×14+(3.4+0.2)×(6.5+0.2)×0.1×5
        =4.2×4.2×0.1×12+4.2×6.7×0.1×7+3.6×(4+0.2)×0.1×14+(3.4+0.2)×(6.5+0.2)×0.1×5
        =4.2×4.2×0.1×12+4.2×6.7×0.1×7+3.6×4.2×0.1×14+(3.4+0.2)×(6.5+0.2)×0.1×5
        =4.2×4.2×0.1×12+4.2×6.7×0.1×7+3.6×4.2×0.1×14+3.6×(6.5+0.2)×0.1×5
        =4.2×4.2×0.1×12+4.2×6.7×0.1×7+3.6×4.2×0.1×14+3.6×6.7×0.1×5
        =17.64×0.1×12+4.2×6.7×0.1×7+3.6×4.2×0.1×14+3.6×6.7×0.1×5
        =1.764×12+4.2×6.7×0.1×7+3.6×4.2×0.1×14+3.6×6.7×0.1×5
        =21.168+4.2×6.7×0.1×7+3.6×4.2×0.1×14+3.6×6.7×0.1×5
        =21.168+28.14×0.1×7+3.6×4.2×0.1×14+3.6×6.7×0.1×5
        =21.168+2.814×7+3.6×4.2×0.1×14+3.6×6.7×0.1×5
        =21.168+19.698+3.6×4.2×0.1×14+3.6×6.7×0.1×5
        =21.168+19.698+15.12×0.1×14+3.6×6.7×0.1×5
        =21.168+19.698+1.512×14+3.6×6.7×0.1×5
        =21.168+19.698+21.168+3.6×6.7×0.1×5
        =21.168+19.698+21.168+24.12×0.1×5
        =21.168+19.698+21.168+2.412×5
        =21.168+19.698+21.168+12.06
        =40.866+21.168+12.06
        =62.034+12.06
        =74.094
    答案:(4+0.2)×(4+0.2)×0.1×12+(4+0.2)×(6.5+0.2)×0.1×7+(3.4+0.2)×(4+0.2)×0.1×14+(3.4+0.2)×(6.5+0.2)×0.1×5=74.094

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