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 945.87×10+515.23×2-(163.8×0.24×10+241.44×0.24+39.9×0.12+253.98×0.24×9+71.28×0.12×9)-509.65 的值.
    题型：数学计算
    解:
          945.87×10+515.23×2-(163.8×0.24×10+241.44×0.24+39.9×0.12+253.98×0.24×9+71.28×0.12×9)-509.65
        =945.87×10+515.23×2-1081.4328-509.65
        =9458.7+515.23×2-1081.4328-509.65
        =9458.7+1030.46-1081.4328-509.65
        =10489.16-1081.4328-509.65
        =9407.7272-509.65
        =8898.0772
    答案:945.87×10+515.23×2-(163.8×0.24×10+241.44×0.24+39.9×0.12+253.98×0.24×9+71.28×0.12×9)-509.65=8898.0772

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