Year 7 Area and Perimeter Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 7 area & perimeter worksheet.
Year 7 Area and Perimeter Worksheet — Level 1 — Practice Set 3 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 5 m long and 7 m wide. Find its perimeter.
Answer: 24 m
- P = 2 × (5 + 7)
- = 2 × 12 = 24 m
2.A rectangle is 11 cm long and 2 cm wide. Find its perimeter.
Answer: 26 cm
- P = 2 × (11 + 2)
- = 2 × 13 = 26 cm
3.A rectangle is 2 cm long and 6 cm wide. Find its area.
Answer: 12 cm2
- A = length × width = 2 × 6
- = 12 cm2
4.A rectangle is 10 mm long and 6 mm wide. Find its perimeter.
Answer: 32 mm
- P = 2 × (10 + 6)
- = 2 × 16 = 32 mm
5.A rectangle is 3 mm long and 4 mm wide. Find its area.
Answer: 12 mm2
- A = length × width = 3 × 4
- = 12 mm2
6.A rectangle is 2 cm long and 9 cm wide. Find its area.
Answer: 18 cm2
- A = length × width = 2 × 9
- = 18 cm2
7.A rectangle is 9 mm long and 9 mm wide. Find its area.
Answer: 81 mm2
- A = length × width = 9 × 9
- = 81 mm2
8.A rectangle is 2 cm long and 10 cm wide. Find its perimeter.
Answer: 24 cm
- P = 2 × (2 + 10)
- = 2 × 12 = 24 cm
9.A rectangle is 5 cm long and 4 cm wide. Find its area.
Answer: 20 cm2
- A = length × width = 5 × 4
- = 20 cm2
10.A rectangle is 6 m long and 4 m wide. Find its area.
Answer: 24 m2
- A = length × width = 6 × 4
- = 24 m2
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.