Incorrect. 0.49 is already expressed in standard notation.
You have already expressed it in standard notation. However, in standard form the result is: 1.175 × 10-1
0.00428
Expressed in standard form, this would be equal to 7.62 x 108.
If you mean: 4.265*10^-7 then it is 0.0000004265
The mass 0.0012 grams is expressed as 1.2 X 10-3 g (1.2e-3).
Standard Form, Scientific Notation and Exponential Notation are different expressions for the same thing. When a number is expressed as a value between 1 and 10 multiplied by a power of 10 it is said to be in Standard Form (or Scientific Notation or Exponential Notation). 3.4 x 10^14 : 8.9 x 10^-4 : 1.2 x 10² are all written in standard form. 15.28 x 10³ is NOT in standard form as 15.28 is not a number between 1 and 10. When converted to 1.528 x 10^4 then it is in standard form.
0.001 expressed in scientific notation is 1 x 10^-3.
47.784 expressed in scientific notation is 4.7784 × 10^1.
10 trillion is 10,000,000,000,000 in standard notation.
10-3 in standard notation is 0.001
357 expressed in scientific notation is: 3.57 x 10^2