Captain reported receiving a gear disagree warning after raising the gear handle. As the flight crew was returning to departure airport a HYD system 3 Lo Pressure Caution Light Illuminated. The flight crew continued the approach and made a precautionary landing at departure airport.

Narrative

We received a Gear Disagree Warning after raising the gear. I called for the Gear Disagree QRH checklist. I advised ATC we were returning and received vectors for the approach right away. The First Officer was doing the checklist; after takeoff checklist. By now there was a HYD LO PRESS Caution for SYS 3. We were joining the final for ILS XX with a gear down and 3 green indication and all primary and secondary; FLT Controls working normally. I elected to land because of this. I had advised ATC of a HYD issue . They declared [priority handling] themselves. The landing was fine with loss of braking and nose wheel steering. I was able to clear the runway and stop on the taxiway. We asked for a tow to the gate from there. We were airborne for 10 minutes. We advised the Flight Attendants we were returning. There was no time to message dispatch. With more time we certainly would have advised them of the issue. My First Officer did an outstanding job I feel. His non flying pilot duties were done without my input; to accomplish this as quickly as it occurred.