What is the value of $\sqrt{1,\!000,\!000} - \sqrt[3]{1,\!000,\!000}$?
We have   \begin{align*}
\sqrt{1,\!000,\!000} - \sqrt[3]{1,\!000,\!000}&= \sqrt{10^6} - \sqrt[3]{10^6} \\
&= (10^6)^{\frac{1}{2}} - (10^6)^{\frac{1}{3}}\\
&=10^{6\cdot \frac{1}{2}} - 10^{6\cdot \frac{1}{3}} \\
&= 10^3 - 10^2 = 1000-100 =\boxed{900}.
\end{align*}