These common core aligned task cards will give your students extra practice with colorful test-type questions. Standards covered include: 3.MD.8
As a teacher, you could laminate them, cut them out, and using the answer sheet, students can solve test-type questions about Perimeter. You could even punch a hole in each corner and but them on a ring so students can flip through them easily.
This pack would also go great with the Area Task Cards!