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 1/2×(8.33×(1.5-0.857)+(29.724+51.03)×1.8+(53.58+64.36)×1.2+(50.53+86.33)×6.8) 的值.
    题型：数学计算
    解:
          1/2×(8.33×(1.5-0.857)+(29.724+51.03)×1.8+(53.58+64.36)×1.2+(50.53+86.33)×6.8)
        =1/2×(8.33×0.643+(29.724+51.03)×1.8+(53.58+64.36)×1.2+(50.53+86.33)×6.8)
        =1/2×(8.33×0.643+80.754×1.8+(53.58+64.36)×1.2+(50.53+86.33)×6.8)
        =1/2×(8.33×0.643+80.754×1.8+117.94×1.2+(50.53+86.33)×6.8)
        =1/2×(8.33×0.643+80.754×1.8+117.94×1.2+136.86×6.8)
        =1/2×1222.88939
        =0.5×1222.88939
        =611.444695
    答案:1/2×(8.33×(1.5-0.857)+(29.724+51.03)×1.8+(53.58+64.36)×1.2+(50.53+86.33)×6.8)=611.444695

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