How do you write $0.0021$ in scientific notation?

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Answer 1 · 2018-06-12T04:25:17

$color(maroon)(=> 2.1 * 10^-3$ is the scientific notation.

$0.0021$

$=> 0.0021 * 10000 / 10000$

$=> 21 / 10000$

$=> (2.1 * cancel10) / (1000cancel0)$

$=> 2.1 / 1000$

$=> 2.1 / 10^3$

$color(maroon)(=> 2.1 * 10^-3$ is the scientific notation.

How do you write 0.00210.0021 in scientific notation?