Grade 3easy
Perimeter Practice
Practice finding the perimeter of rectangles, squares, and triangles. Perimeter is the distance around the outside of a shape.
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All 20 Practice Problems
Every question in this set. Solve them on paper, or use the interactive tool above for instant feedback and hints.
- 1.Find the perimeter of a rectangle with length 8 cm and width 5 cm.
- 2.Find the perimeter of a square with sides of 7 m.
- 3.Find the perimeter of a triangle with sides 5 cm, 6 cm, and 7 cm.
- 4.Find the perimeter of a rectangle with length 12 in and width 4 in.
- 5.Find the perimeter of a square with sides of 9 ft.
- 6.Find the perimeter of an equilateral triangle with sides of 10 cm.
- 7.Find the perimeter of a rectangle with length 15 m and width 8 m.
- 8.Find the perimeter of a square with sides of 12 cm.
- 9.Find the perimeter of a triangle with sides 8 in, 10 in, and 12 in.
- 10.Find the perimeter of a rectangle with length 20 ft and width 10 ft.
- 11.A garden is 25 m long and 15 m wide. What is the perimeter?
- 12.A square room has sides of 14 ft. What is the perimeter?
- 13.Find the perimeter of a rectangle with length 18 cm and width 11 cm.
- 14.A triangular sign has sides of 4 ft, 4 ft, and 6 ft. What is the perimeter?
- 15.Find the perimeter of a square with sides of 25 m.
- 16.A rectangular pool is 50 m long and 25 m wide. What is the perimeter?
- 17.Find the perimeter of an isosceles triangle with two sides of 8 cm and a base of 6 cm.
- 18.A square playground has sides of 30 m. What is the perimeter?
- 19.Find the perimeter of a rectangle with length 9 in and width 6 in.
- 20.A frame is 16 cm by 12 cm. What is the perimeter?
Show answer key
- 1.Find the perimeter of a rectangle with length 8 cm and width 5 cm. Answer: 26 cm
- 2.Find the perimeter of a square with sides of 7 m. Answer: 28 m
- 3.Find the perimeter of a triangle with sides 5 cm, 6 cm, and 7 cm. Answer: 18 cm
- 4.Find the perimeter of a rectangle with length 12 in and width 4 in. Answer: 32 in
- 5.Find the perimeter of a square with sides of 9 ft. Answer: 36 ft
- 6.Find the perimeter of an equilateral triangle with sides of 10 cm. Answer: 30 cm
- 7.Find the perimeter of a rectangle with length 15 m and width 8 m. Answer: 46 m
- 8.Find the perimeter of a square with sides of 12 cm. Answer: 48 cm
- 9.Find the perimeter of a triangle with sides 8 in, 10 in, and 12 in. Answer: 30 in
- 10.Find the perimeter of a rectangle with length 20 ft and width 10 ft. Answer: 60 ft
- 11.A garden is 25 m long and 15 m wide. What is the perimeter? Answer: 80 m
- 12.A square room has sides of 14 ft. What is the perimeter? Answer: 56 ft
- 13.Find the perimeter of a rectangle with length 18 cm and width 11 cm. Answer: 58 cm
- 14.A triangular sign has sides of 4 ft, 4 ft, and 6 ft. What is the perimeter? Answer: 14 ft
- 15.Find the perimeter of a square with sides of 25 m. Answer: 100 m
- 16.A rectangular pool is 50 m long and 25 m wide. What is the perimeter? Answer: 150 m
- 17.Find the perimeter of an isosceles triangle with two sides of 8 cm and a base of 6 cm. Answer: 22 cm
- 18.A square playground has sides of 30 m. What is the perimeter? Answer: 120 m
- 19.Find the perimeter of a rectangle with length 9 in and width 6 in. Answer: 30 in
- 20.A frame is 16 cm by 12 cm. What is the perimeter? Answer: 56 cm
About This Practice
This practice set includes 20 perimeter problems for third graders. Understanding perimeter is essential for measurement and real-world applications like fencing and borders.
Want more practice? See all Grade 3 practice →