Kennedy Burke and Kelli Hayes each added 12 points for the Bruins (4-1). UCLA leading scorer Jordin Canada got into early foul trouble and finished with just six points, five rebounds and five steals.
Kayla Goth led Kansas State (4-1) with a season-high 19 points. Goth was 9 of 15 from the field.
After only leading 31-28 early second half, the Bruins outscored the Wildcats the rest of the way in the third quarter, 17-9.
Kansas State struggled shooting from everywhere, including 19 of 54 (35 percent) from the field. The Bruins were 21 of 56 for 38 percent.