总述：本次共解6题。其中
           ☆算术计算6题

〖1/6算式〗
    作业：求算式 1.1×1.2×1.3+1.2×1.3×1.4+1.3×1.4×1.5+1.4×1.5×1.6 的值.
    题型：数学计算
    解:
          1.1×1.2×1.3+1.2×1.3×1.4+1.3×1.4×1.5+1.4×1.5×1.6
        =1.32×1.3+1.2×1.3×1.4+1.3×1.4×1.5+1.4×1.5×1.6
        =1.716+1.2×1.3×1.4+1.3×1.4×1.5+1.4×1.5×1.6
        =1.716+1.56×1.4+1.3×1.4×1.5+1.4×1.5×1.6
        =1.716+2.184+1.3×1.4×1.5+1.4×1.5×1.6
        =1.716+2.184+1.82×1.5+1.4×1.5×1.6
        =1.716+2.184+2.73+1.4×1.5×1.6
        =1.716+2.184+2.73+2.1×1.6
        =1.716+2.184+2.73+3.36
        =3.9+2.73+3.36
        =6.63+3.36
        =9.99
    答案:1.1×1.2×1.3+1.2×1.3×1.4+1.3×1.4×1.5+1.4×1.5×1.6=9.99
〖2/6算式〗
    作业：求算式 9.99999999×9.87654321+10.00000001×9.8765432 的值.
    题型：数学计算
    解:
          9.99999999×9.87654321+10.00000001×9.8765432
        =98.765432+10.00000001×9.8765432
        =98.765432+98.765432
        =197.530864
    答案:9.99999999×9.87654321+10.00000001×9.8765432=197.530864
〖3/6算式〗
    作业：求算式 (1-0.5-0.25-0.125-0.0625-0.03125)÷3125 的值.
    题型：数学计算
    解:
          (1-0.5-0.25-0.125-0.0625-0.03125)÷3125
        =0.03125÷3125
        =0.00001
    答案:(1-0.5-0.25-0.125-0.0625-0.03125)÷3125=0.00001
〖4/6算式〗
    作业：求算式 3.5÷(0.25+(3-0.75)÷1.5)+(13-0.75+0.25)×3.2 的值.
    题型：数学计算
    解:
          3.5÷(0.25+(3-0.75)÷1.5)+(13-0.75+0.25)×3.2
        =3.5÷(0.25+2.25÷1.5)+(13-0.75+0.25)×3.2
        =3.5÷1.75+(13-0.75+0.25)×3.2
        =3.5÷1.75+12.5×3.2
        =2+12.5×3.2
        =2+40
        =42
    答案:3.5÷(0.25+(3-0.75)÷1.5)+(13-0.75+0.25)×3.2=42
〖5/6算式〗
    作业：求算式 0.01×0.01+0.02×0.03+0.03×0.05+0.04×0.07+0.05×0.09 的值.
    题型：数学计算
    解:
          0.01×0.01+0.02×0.03+0.03×0.05+0.04×0.07+0.05×0.09
        =0.0001+0.02×0.03+0.03×0.05+0.04×0.07+0.05×0.09
        =0.0001+0.0006+0.03×0.05+0.04×0.07+0.05×0.09
        =0.0001+0.0006+0.0015+0.04×0.07+0.05×0.09
        =0.0001+0.0006+0.0015+0.0028+0.05×0.09
        =0.0001+0.0006+0.0015+0.0028+0.0045
        =0.0007+0.0015+0.0028+0.0045
        =0.0022+0.0028+0.0045
        =0.005+0.0045
        =0.0095
    答案:0.01×0.01+0.02×0.03+0.03×0.05+0.04×0.07+0.05×0.09=0.0095
〖6/6算式〗
    作业：求算式 2.22222225÷(1.99999999×1.99999998-2×1.99999997) 的值.
    题型：数学计算
    解:
          2.22222225÷(1.99999999×1.99999998-2×1.99999997)
        =2.22222225÷0
        =inf
    答案:2.22222225÷(1.99999999×1.99999998-2×1.99999997)=inf

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