# Which number is smallest, 3.99xx10^-6, 2.35xx10^-4,9.83xx10^-5?

Jan 25, 2018

$3.99 \times {10}^{-} 6$

#### Explanation:

Since all of these numbers are in scientific notation, we can determine which one is the smallest by looking at the exponents.

The number with the smallest exponent is the smallest number.

In this case, the smallest exponent is $\textcolor{red}{- 6}$

Therefore, the smallest number is $3.99 \times {10}^{\textcolor{red}{- 6}}$