Mathematics · Grades 3–5
Perimeter of a square
A square has four equal sides. Perimeter uses linear units.
The key idea
A square has four equal sides. Perimeter uses linear units.
P = 4s
Worked examples
A square has side 82 cm. Find its perimeter in cm.
4 × 82 = 328
328 cm
A square has side 49 cm. Find its perimeter in cm.
4 × 49 = 196
196 cm
Try it yourself
A square has side 63 cm. Find its perimeter in cm.
A square has side 42 cm. Find its perimeter in cm.
Check your understanding
Answers and marking notes
- 252 cm
4 × 63 = 252
- 168 cm
4 × 42 = 168
Further reading and review references
These are reference links, not copied exercises, institutional endorsement or proof of independent review.
Learning preview · teacher review required. Grade bands are approximate, not official curriculum alignment.