Year 5 Area and Perimeter Worksheet — Level 2 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 5 area & perimeter worksheet.
Year 5 Area and Perimeter Worksheet — Level 2 — Practice Set 3 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 2 m long and 20 m wide. Find its perimeter.
Answer: 44 m
- P = 2 × (2 + 20)
- = 2 × 22 = 44 m
2.A triangle has a base of 6 mm and a perpendicular height of 6 mm. Find its area.
Answer: 18 mm2
- A = ½ × base × height = ½ × 6 × 6
- = 18 mm2
3.A rectangle is 21 cm long and 18 cm wide. Find its perimeter.
Answer: 78 cm
- P = 2 × (21 + 18)
- = 2 × 39 = 78 cm
4.A rectangle is 24 cm long and 19 cm wide. Find its perimeter.
Answer: 86 cm
- P = 2 × (24 + 19)
- = 2 × 43 = 86 cm
5.A triangle has a base of 12 cm and a perpendicular height of 14 cm. Find its area.
Answer: 84 cm2
- A = ½ × base × height = ½ × 12 × 14
- = 84 cm2
6.A rectangle is 3 mm long and 6 mm wide. Find its area.
Answer: 18 mm2
- A = length × width = 3 × 6
- = 18 mm2
7.A rectangle is 6 mm long and 18 mm wide. Find its perimeter.
Answer: 48 mm
- P = 2 × (6 + 18)
- = 2 × 24 = 48 mm
8.A rectangle is 4 mm long and 18 mm wide. Find its perimeter.
Answer: 44 mm
- P = 2 × (4 + 18)
- = 2 × 22 = 44 mm
9.A rectangle is 5 cm long and 13 cm wide. Find its area.
Answer: 65 cm2
- A = length × width = 5 × 13
- = 65 cm2
10.A rectangle is 18 cm long and 17 cm wide. Find its area.
Answer: 306 cm2
- A = length × width = 18 × 17
- = 306 cm2
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.