Scientific notation is important because astronomers and other scientist use this when they are working with very large or very small numbers. You already know that scientific notation is a system for writing and working with numbers that makes it much easier to deal with numbers that are very small or very large.
1. Scientific Notation expresses a value as the product of a number between 1 and 10 and a power of ten.
2. D
3. it makes very large or very small numbers easier to work with.
4. B and D
5. False
Hope these are correct :) Have a great day