Answer
See image below:
Work Step by Step
The numbers $-6.2$ and $-2.5$ are negative and thus fall below the $0$ point.
$-6.2$ must be placed further left than $-2.5$. We know this because $-6.2<-2.5$.
The numbers $\sqrt 5$ and $5.4$ are positive and thus fall above the $0$ point.
In order to place $\sqrt 5$, we need to get a reasonable estimate as to its value. Plugging $\sqrt 5$ into a calculator shows that its value is about $2.24$.
This would mean that $\sqrt 5$ is less than $5.4$, as its estimated value is less than $5.4$.
Placing these numbers on a number line would produce the image above.
