总述：本次共解3题。其中
           ☆算术计算3题

〖1/3算式〗
    作业：求算式 8+88+888+8888+88888+888888+8888888+88888888+888888888+8888888888+88888888888 的值.
    题型：数学计算
    解:
          8+88+888+8888+88888+888888+8888888+88888888+888888888+8888888888+88888888888
        =96+888+8888+88888+888888+8888888+88888888+888888888+8888888888+88888888888
        =984+8888+88888+888888+8888888+88888888+888888888+8888888888+88888888888
        =9872+88888+888888+8888888+88888888+888888888+8888888888+88888888888
        =98760+888888+8888888+88888888+888888888+8888888888+88888888888
        =987648+8888888+88888888+888888888+8888888888+88888888888
        =9876536+88888888+888888888+8888888888+88888888888
        =98765424+888888888+8888888888+88888888888
        =987654312+8888888888+88888888888
        =9876543200+88888888888
        =98765432088
    答案:8+88+888+8888+88888+888888+8888888+88888888+888888888+8888888888+88888888888=98765432088
〖2/3算式〗
    作业：求算式 27*54+54*81+81*108+108*135 的值.
    题型：数学计算
    解:
          27*54+54*81+81*108+108*135
        =1458+54*81+81*108+108*135
        =1458+4374+81*108+108*135
        =1458+4374+8748+108*135
        =1458+4374+8748+14580
        =5832+8748+14580
        =14580+14580
        =29160
    答案:27*54+54*81+81*108+108*135=29160
〖3/3算式〗
    作业：求算式 7+14+21+28+88888888+757524+2757+1234538+211 的值.
    题型：数学计算
    解:
          7+14+21+28+88888888+757524+2757+1234538+211
        =21+21+28+88888888+757524+2757+1234538+211
        =42+28+88888888+757524+2757+1234538+211
        =70+88888888+757524+2757+1234538+211
        =88888958+757524+2757+1234538+211
        =89646482+2757+1234538+211
        =89649239+1234538+211
        =90883777+211
        =90883988
    答案:7+14+21+28+88888888+757524+2757+1234538+211=90883988

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