Đerek and Srbić's medals put the total number of medals won for Croatia at World Cup competitions at 382 - 274 for men's gymnastics and 108 for women's gymnastics.
Nina Derwael of Belgium won the gold in the women's balance beam exercise while Diana Varinska of Ukraine won the silver.
Marlies Männersdorfer of Austria won the silver in the floor exercise and Elina Vihrova of Latvia won the bronze.
In the men's high bar, the silver went to Krisztian Balazs of Hungary while the bronze went to Adem Asil of Turkey.
On Saturday, Aurel Benović of Croatia won the silver medal in the men's floor exercise.