Iowa leads Purdue 36-31 at halftime Tuesday at Mackey Arena.
The Boilermakers are shooting just 36 percent from the floor (9 of 25). Purdue has missed several close chances near the basket.
Ryne Smith has a team-high eight points. Kelsey Barlow has seven points.
Zach McCabe leads Iowa with 13 points. Roy Devyn Marble has 11 points.