See below, different figures. Also other interesting information. Info from Airliners.Net
Reference: http://www.airliners.net/aircraft-data/fokker-50/218
Performance:
Series 100 - Max cruising speed 532km/h (287kt), economical cruising speed 454km/h (245kt). Max operating altitude 25,000ft. Range with 50 passengers and reserves 2055km (1110nm), or 2822km (1524nm) for optional high gross weight version. Series 300 - Typical cruising speed 526km/h (284kt). Range with 50 passengers and reserves at high speed cruise 2033km (1097nm), or 3017km (1628nm) for high gross weight option at long range cruise.
Weights
Series 100 & 300 - Operating empty 12,520kg (27,602lb), max takeoff 19,950kg (43,980lb), or optionally 20,820kg (45,900lb).