How do you write 0.000123 in scientific notation?

1 Answer
EZ as pi
Sep 3, 2016

#1.23 xx 10^-4#

Explanation:

In scientific notation there must be only one digit before the decimal point. The power of 10 indicates how many times to multiply or divide by 10.

#0. color(red)(0001)23 = 1.23 xx 10^color(red)(-4)#

We could also write the number as a fraction based on the decimal.

#0.000123 = 123/1000000 = 123/10^6 = 123 xx 10^-6#

#123 xx 10^-6" " larr " change to scientific notation"#

=#1.23 xx 10^-4#

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