# How do you write 0.000020 in scientific notation?

Oct 27, 2015

$2 \times {10}^{- 5}$

#### Explanation:

Scientific notation always has 1 digit in front of the comma so we need to move the comma 5 places to the right to achieve this hence the exponent value of 5, and the number is very small (less than 1) hence the negative exponent.