Year 8 Area and Perimeter Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 8 area & perimeter worksheet.
Year 8 Area and Perimeter Worksheet — Level 1 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 6 mm long and 4 mm wide. Find its area.
Answer: 24 mm2
- A = length × width = 6 × 4
- = 24 mm2
2.A rectangle is 10 m long and 2 m wide. Find its area.
Answer: 20 m2
- A = length × width = 10 × 2
- = 20 m2
3.A rectangle is 12 m long and 9 m wide. Find its area.
Answer: 108 m2
- A = length × width = 12 × 9
- = 108 m2
4.A rectangle is 4 mm long and 2 mm wide. Find its area.
Answer: 8 mm2
- A = length × width = 4 × 2
- = 8 mm2
5.A rectangle is 10 mm long and 11 mm wide. Find its area.
Answer: 110 mm2
- A = length × width = 10 × 11
- = 110 mm2
6.A rectangle is 7 cm long and 4 cm wide. Find its perimeter.
Answer: 22 cm
- P = 2 × (7 + 4)
- = 2 × 11 = 22 cm
7.A rectangle is 2 mm long and 11 mm wide. Find its perimeter.
Answer: 26 mm
- P = 2 × (2 + 11)
- = 2 × 13 = 26 mm
8.A rectangle is 6 m long and 12 m wide. Find its perimeter.
Answer: 36 m
- P = 2 × (6 + 12)
- = 2 × 18 = 36 m
9.A rectangle is 7 m long and 10 m wide. Find its perimeter.
Answer: 34 m
- P = 2 × (7 + 10)
- = 2 × 17 = 34 m
10.A rectangle is 6 m long and 9 m wide. Find its perimeter.
Answer: 30 m
- P = 2 × (6 + 9)
- = 2 × 15 = 30 m
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.