Gers stroll past Well
Recalled midfielder Russell Latapy opened the scoring for the home side after 14 minutes and Norwegain hit-man doubled the lead four minutes before the break.
Dutch defender Fernando Ricksen wrapped up the win with the third and final goal after 85 minutes.
St Johnstone kept alive their slim hopes of survival with a superb 3-0 win over Livingston at McDiarmid Park.
Paul Hartley fired the home side in front a minute before the break and young starlet Keigan Parker hit the second ten minutes from time.
Graeme Jones netted a third in the last minute to give The Saints a much-needed win after eight successive defeats.
Hibernian are still looking for their first win under Franck Sauzee after being held to a 1-1 draw with Dunfermline at Easter Road.
Steven Hampshire had given The Pars the lead with his first goal in four months just before the hour but Derek Townsley earned the home side a point with a 78th minute equaliser.
Aberdeen moved to within three points of third-placed Livingston with a 4-0 thumping of Dundee United at Pittodrie.
Robbie Winters got the home side off to a flying start with the opener after just three minutes and Derek Young netted a brace (10,48) to put the hosts in firm control.
Leon Mike celebrated his Dons debut with his first goal for the club to make it a good afternoon for Ebbe Skovdahl's men.
Two goals in the last seven minutes earned Hearts a point after a six-goal thriller with Kilmarnock at Rugby Park.
Stephane Mahe had given Hearts the lead five minutes before the break but Killie turned the game on its head with two goals in six minutes from Craig Dargo (46) and Tommy Johnson (52).
Stephen Murray hit the third for the home side after 66 minutes, but Stephen Pressley pulled one back seven minutes from time from the penalty spot.
The visitors earned a point with a Tommi Gronlund strike after 86 minutes.
Click on fixture for full match summary
Aberdeen 4-0 Dundee United
Hibernian 1-1 Dunfermline
Kilmarnock 3-3 Hearts
Rangers 3-0 Motherwell
St Johnstone 3-0 Livingston
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