Bulgaria trailed 45-38 heading to the last quarter but then ran Finland out of the gym, outscoring them 29-15 the rest of the way.
The Bulgarians have already punched their ticket to the Second Round.
The second-place Danes scored 21 of the game's first 22 points to seize control of the game from the off.
Stine Austgulen led the Norwegian fightback with 17 points but they never seriously threatened their Danish opponents.
Norway slumped to 1-2 with the setback.
Germany, in improving to 4-0, were led by Elisabeth Dzirma's 21 points, two steals and two blocks.
The Germans have also booked their place in the Second Round.
Ukraine improved to 1-2 and the Scots fell to 0-3.