Van \(\text{hm}\) naar \(\text{dm}\) is \(3\) stappen, per stap vermenigvuldigen met \(10\text{,}\) dus \(0{,}035\text{ }\text{hm}=35\text{ }\text{dm}\text{.}\)

Van \(\text{cm}\) naar \(\text{dm}\) is \(1\) stap, per stap delen door \(10\text{,}\) dus \(2{,}2\text{ }\text{cm}=0{,}22\text{ }\text{dm}\text{.}\)

\(2{,}5\text{ }\text{m}^2=0{,}025\text{ }\text{dam}^2=0{,}025\text{ }\text{are}\)

\(6{,}8\text{ }\text{m}^2=0{,}00068\text{ }\text{hm}^2=0{,}00068\text{ }\text{ha}\)

\(6{,}7\text{ }\text{cL}=0{,}067\text{ }\text{L}=0{,}067\text{ }\text{dm}^3\)