Grade 3 · Perimeter
Grade 3 Perimeter Worksheets
Free printable Grade 3 perimeter worksheets, each with an answer key and sized to fit one page. Pick beginner, intermediate, or advanced and generate a fresh pack in seconds. No AI, no wrong answers.
Create free worksheets →Free to start · answer keys included · your first pack unlocks 14 days of Standard · no card required.
Grade 3 examples by level
- BeginnerFind the perimeter =20 cm
- IntermediateFind the perimeter =38 cm
- AdvancedFind the perimeter =34 cm
Real problems from the generator: always mathematically correct, and every pack is different.
Why Grade 3 perimeter practice matters
Perimeter is an early measurement skill that builds spatial reasoning and sets up area, and it shows up in real tasks like fencing and framing.
Grade 3 is where Mathter's perimeter worksheets first appear. Grade 4 picks up from here with more advanced problems.
Want the full method, tips, and common mistakes? Read the Perimeter Worksheets guide.
Frequently asked questions
- What's on a Grade 3 perimeter worksheet?
- Each pack has up to 12 questions per page with a matching answer key, tuned to Grade 3, with beginner, intermediate, and advanced options so you can match the child's level.
- How do you find the perimeter of a rectangle?
- Add all four sides, or use 2 × (length + width).
- What unit is perimeter measured in?
- A length unit like cm or m, not square units.
Make a Grade 3 perimeter pack
Pick your options and print in seconds, with answer keys included.
Create free worksheetsFree to start · answer keys included · your first pack unlocks 14 days of Standard · no card required.