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# This isn't urgent, but I would like to know.

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What is scientific notation? I just forgot

Jul 10, 2020
edited by ryanthemathboi  Jul 10, 2020

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Uh so I know that it is used with powers, but I don't know how how to solve it.

Jul 10, 2020
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Scientific notation is usually for writing gigantically enormous numbers, or teensy miniscule numbers.

It is written as $$a \cdot 10^x$$

$$a$$ can be a integer or decimal between 0 and 10 (non-inclusive).

Some examples:

$$31,469 = 3.1469 \cdot 10^{4}$$

$$142000000000000000 = 1.42 \cdot 10^{17}$$

If a number is less than 1, it is written as 10 ^ {negative number}.

$$0.02 = 2 \cdot 10^{-2}$$

$$0.00000000103 = 1.03 \cdot 10^{-11}$$

$$31.1 \cdot 10^{16}$$ isn't scientific notation, as 31.1 can further be divided by 10 to become $$3.11 \cdot 10^{17}$$,

This is a rather short summary of scientific notation, but I hope you can understand some part of it now.