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.