Opting to bat first, Australian women could manage only 175 in 46.1 overs on a slow Barabati Stadium track but then bowled with a lot of purpose to skittle Pakistan out for a paltry 84 in 33.2 overs.
Veteran all-rounder of Indian origin Lisa Sthalekar contributed an useful 32 and then bowled nine overs of controlled off-breaks to grab two for 19. Another notable performer was Sarah Coyte who took three wickets and scored 35 runs.
Pakistan team had to shift base to Cuttack for their group league matches after protests from political parties against their participation in the marquee event.
Australian batswomen didn't have a good day as only opener Rachel Haynes (39) and Sarah Coyte (35) were the only other two, who crossed the 30-run mark barring Sthalekar.
The Australian total was propped up by the 17 wides bowled by Pakistani women. Left-arm spinner Sadia Yousuf was the pick of the bowlers grabbing three for 30 while Asmavia Iqbal chipped in with two wickets.
The target wasn't a big one but save 21-year-old batswoman Bismah Maroof who contributed 43, only Nadia Yousuf reached double figures. There were absolutely no partnerships and the Pakistani women found it difficult to get going against the pce trio of Ellyse Perry, Megan Schutt and Sarah Coyte.
Coyte was the most successful bowler taking three for 20 while Perry and Schutt took two and one wicket respectively.
Australia: 175 in 46.1 overs (Rachel Haynes 39, Sarah Coyte 35, Lisa Sthalekar 32; Sadia Yousuf 3/30)
Pakistan: 84 in 33.2 overs (Bimah Maroof 43, Sarah Coyte 3/20, Lisa Sthalekar 2/19).