Batting first, Scotland were skittled out for 140 in 49.1 overs with all-rounder Salma Khatun and Khadija-tul Kubra sharing six wickets between themselves. Bangladesh captain and player of the match Rumana Ahmed also took two wickets in what was a brilliant performance by the bowlers.
In reply, the women in red and green romped to their destination in 37.3 overs for the loss of three wickets.
Fargana Hoque top-scored with an unbeaten 109-ball 53 while Rumana put in an all-round display by scoring an undefeated 46-ball 38.
Ten teams, divided into two groups, are currently battling for four places in the upcoming World Cup, scheduled to get underway in England in June.
The top three teams in each group will progress to the Super Six round where the top four sides will qualify for the World Cup.
Australia, New Zealand, host England and the West Indies have already qualified for the World Cup as the top ranked teams.
Bangladesh will take on South Africa in their final Group B game Saturday.
143/3 in 37.3 overs (Fargana 53*, Rumana 38*) beat Scotland women
140 in 49.1 overs (Salma 3/21, Kubra 3/31) by seven wickets