规定:0.1=1/10=10^-1,0.01=1/100=10^-2,0.001=1/1000=10^-3 用十的指数形式表示0.00001,0.000001将0.0038695表示成a×10^n的形式(1≤a<10, n为负数

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规定:0.1=1/10=10^-1,0.01=1/100=10^-2,0.001=1/1000=10^-3用十的指数形式表示0.00001,0.000001将0.0038695表示成a×10^n的形式

规定:0.1=1/10=10^-1,0.01=1/100=10^-2,0.001=1/1000=10^-3 用十的指数形式表示0.00001,0.000001将0.0038695表示成a×10^n的形式(1≤a<10, n为负数
规定:0.1=1/10=10^-1,0.01=1/100=10^-2,0.001=1/1000=10^-3

  1.  用十的指数形式表示0.00001,0.000001

  2. 将0.0038695表示成a×10^n的形式(1≤a<10, n为负数

规定:0.1=1/10=10^-1,0.01=1/100=10^-2,0.001=1/1000=10^-3 用十的指数形式表示0.00001,0.000001将0.0038695表示成a×10^n的形式(1≤a<10, n为负数
3.8695*10^-3