7th Grade Area and Perimeter Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 7th Grade area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheet7th Grade · Mathematics · Area & Perimeter7th Grade Area and Perimeter Worksheet — Level 1 — Practice Set 4 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 12 m long and 7 m wide. Find its perimeter.
Answer: 38 m
- P = 2 × (12 + 7)
- = 2 × 19 = 38 m
2.A rectangle is 3 cm long and 8 cm wide. Find its perimeter.
Answer: 22 cm
- P = 2 × (3 + 8)
- = 2 × 11 = 22 cm
3.A rectangle is 11 cm long and 8 cm wide. Find its area.
Answer: 88 cm2
- A = length × width = 11 × 8
- = 88 cm2
4.A rectangle is 7 mm long and 6 mm wide. Find its perimeter.
Answer: 26 mm
- P = 2 × (7 + 6)
- = 2 × 13 = 26 mm
5.A rectangle is 3 cm long and 11 cm wide. Find its area.
Answer: 33 cm2
- A = length × width = 3 × 11
- = 33 cm2
6.A rectangle is 12 m long and 3 m wide. Find its area.
Answer: 36 m2
- A = length × width = 12 × 3
- = 36 m2
7.A rectangle is 2 m long and 5 m wide. Find its area.
Answer: 10 m2
- A = length × width = 2 × 5
- = 10 m2
8.A rectangle is 10 cm long and 11 cm wide. Find its area.
Answer: 110 cm2
- A = length × width = 10 × 11
- = 110 cm2
9.A rectangle is 10 mm long and 2 mm wide. Find its area.
Answer: 20 mm2
- A = length × width = 10 × 2
- = 20 mm2
10.A rectangle is 8 cm long and 12 cm wide. Find its perimeter.
Answer: 40 cm
- P = 2 × (8 + 12)
- = 2 × 20 = 40 cm
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.