## Introductory Algebra for College Students (7th Edition)

$0.0215$
Since the exponent of $10^{ -2 }$ is $\text{ negative } 2 ,$ move the decimal point $2$ places to the $\text{ left }.$ Hence, the given expression, $2.15 \times10^{-2} ,$ is equivalent to \begin{array}{l}\require{cancel} 0.0215 .\end{array}