5th Grade Area and Perimeter Worksheet — Level 2 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 5th Grade area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheet5th Grade · Mathematics · Area & Perimeter5th Grade Area and Perimeter Worksheet — Level 2 — Practice Set 3 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 3 cm long and 19 cm wide. Find its area.
Answer: 57 cm2
- A = length × width = 3 × 19
- = 57 cm2
2.A rectangle is 12 mm long and 13 mm wide. Find its area.
Answer: 156 mm2
- A = length × width = 12 × 13
- = 156 mm2
3.A rectangle is 4 m long and 7 m wide. Find its area.
Answer: 28 m2
- A = length × width = 4 × 7
- = 28 m2
4.A triangle has a base of 18 cm and a height of 15 cm. Find its area.
Answer: 135 cm2
- A = ½ × base × height = ½ × 18 × 15
- = 135 cm2
5.A rectangle is 28 cm long and 8 cm wide. Find its perimeter.
Answer: 72 cm
- P = 2 × (28 + 8)
- = 2 × 36 = 72 cm
6.A rectangle is 27 cm long and 16 cm wide. Find its perimeter.
Answer: 86 cm
- P = 2 × (27 + 16)
- = 2 × 43 = 86 cm
7.A rectangle is 16 m long and 13 m wide. Find its perimeter.
Answer: 58 m
- P = 2 × (16 + 13)
- = 2 × 29 = 58 m
8.A rectangle is 29 m long and 18 m wide. Find its area.
Answer: 522 m2
- A = length × width = 29 × 18
- = 522 m2
9.A rectangle is 21 mm long and 16 mm wide. Find its perimeter.
Answer: 74 mm
- P = 2 × (21 + 16)
- = 2 × 37 = 74 mm
10.A triangle has a base of 18 m and a height of 9 m. Find its area.
Answer: 81 m2
- A = ½ × base × height = ½ × 18 × 9
- = 81 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.