Ruim je kamer op!
Ik wil opruimen.
Ik heb opgeruimd.
Tidy up your room!
Yes. opruimen splits into op + ruimen. In a main clause the prefix goes to the end: Ruim je kamer op!
The perfect tense is "Ik heb opgeruimd" — the -ge- slots between the prefix and the stem.
opruimen means "to tidy up". Example: Ruim je kamer op! (Tidy up your room!)
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