## Elementary Technical Mathematics

a. $32,520$ b. $32,518.61$
For the number $32,518.612$, we have: a. To round to the nearest ten, we change "$18.612$" to "$20$" and obtain: $32,520$. b. To round to the nearest hundredth, we round "$0.612$" to "$0.61$" and obtain: $32,518.61$.