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000009 km in Scientific Notation = 9E-05 x 105km

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Q: An ant is 000009km long how can this be written in scientific notation?
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A light year is approximately 9500000000000 kilometers long. scientific notation?

It is: 9.5*10^12 km in scientific notation


What are the example of scientific notation?

Scientific notation is a way to signify really long numbers without writing it out in full, all 50 digits. 1,000,000,000 in scientific notation is 1.00 X 109


Why do you have scientific notation?

Scientific notation makes it easier to express numbers of extremely small or large magnitude. For example, we could either say that something is .00000000068 meters long, or simply use scientific notation to write it as 6.8 x 10-10 meters. There is also an "engineering" notation which is similar to scientific notation, but all exponents are multiples of 3. This is so we can introduce prefixes such as nano, micro, kilo, giga, etc. The number 573000 would be written as 5.73 x 105 in scientific notation, and 573 x 103 in engineering notation.


What are the rules when expressing a long mathematical expression to scientific notation form?

Scientific notation is of little use for long mathematical expressions. It is used to express very large or very small numbers - not expressions.


How to write the rules in writing standard notation to scientific notation?

I don't know what you mean "how to write the rules." In the US, "standard" notation means "long form", i.e. 6,000,000, while "scientific" notation means the exponential form, 6x106. I had thought it was the same in the UK, but Mehtamatics says otherwise: "Standard notation and scientific notation are the same in terms of UK usage of these phrases."