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Scientific Notation

Scientific notation is used to express very large (e.g. 297,000,000,000) and very small (e.g. 0.00000039) numbers in a more concise form. Number expressed using scientific notation are written in the form:

a x 10n

For example the number 297,000,000,000 can be written as:

2.97 x 1011
and the number 0.00000039 can be written as:
3.9 x 10-7


Examples of Expressing Numbers in Scientific Notation