Year 8 Area and Perimeter Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 8 area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · Area & PerimeterYear 8 Area and Perimeter Worksheet — Level 1 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 7 m long and 3 m wide. Find its area.
Answer: 21 m2
- A = length × width = 7 × 3
- = 21 m2
2.A rectangle is 8 mm long and 5 mm wide. Find its perimeter.
Answer: 26 mm
- P = 2 × (8 + 5)
- = 2 × 13 = 26 mm
3.A rectangle is 6 m long and 12 m wide. Find its area.
Answer: 72 m2
- A = length × width = 6 × 12
- = 72 m2
4.A rectangle is 6 cm long and 2 cm wide. Find its perimeter.
Answer: 16 cm
- P = 2 × (6 + 2)
- = 2 × 8 = 16 cm
5.A rectangle is 5 m long and 10 m wide. Find its perimeter.
Answer: 30 m
- P = 2 × (5 + 10)
- = 2 × 15 = 30 m
6.A rectangle is 4 m long and 8 m wide. Find its area.
Answer: 32 m2
- A = length × width = 4 × 8
- = 32 m2
7.A rectangle is 12 mm long and 2 mm wide. Find its area.
Answer: 24 mm2
- A = length × width = 12 × 2
- = 24 mm2
8.A rectangle is 10 m long and 12 m wide. Find its perimeter.
Answer: 44 m
- P = 2 × (10 + 12)
- = 2 × 22 = 44 m
9.A rectangle is 7 cm long and 3 cm wide. Find its area.
Answer: 21 cm2
- A = length × width = 7 × 3
- = 21 cm2
10.A rectangle is 3 cm long and 5 cm wide. Find its area.
Answer: 15 cm2
- A = length × width = 3 × 5
- = 15 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.