Australia scored 21 tries to beat Wales 124-6 at CommBank Stadium, setting the biggest winning margin in international rugby league history.
Jaime Chapman's six tries equalled Julia Robinson's Test-match record, while Jess Sergis scored four. Tamika Upton, Abbi Church and Keilee Joseph each crossed twice.
Jesse Southwell scored a try and kicked 20 goals for a personal total of 44 points. Wales' Paige Travis scored against the Jillaroos in the 60th minute.
New Zealand overcame Papua New Guinea 40-12 after trailing 12-10. Kaiyah Atai scored late in the first half, and the Kiwi Ferns added five tries after the break.
New Zealand will meet Samoa in a semi-final in Newcastle.
Samoa defeated England 24-6 in Wollongong, with Freedom Crichton Ropati scoring a first-half hat-trick. Evie Cousins scored for England before Fanua Rimoni sealed Samoa's win.
Fiji, competing at its first World Cup, beat France 54-6 on the Gold Coast. Tahlia Marshall scored twice, and eight other Fijian players also scored.
Fiji will face the Jillaroos at Allianz Stadium next Sunday. Fiji and Samoa have both reached the semi-finals for the first time.
Liv Wood, Cristina Song Puche, Tia Molo and Essay Banu each received a one-match ban after being found guilty at a panel; early pleas brought warnings.