5th Grade Area and Perimeter Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 5th Grade area & perimeter worksheet.
5th Grade Area and Perimeter Worksheet — Level 2 — Practice Set 2 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 2 cm long and 13 cm wide. Find its perimeter.
Answer: 30 cm
- P = 2 × (2 + 13)
- = 2 × 15 = 30 cm
2.A rectangle is 9 mm long and 19 mm wide. Find its area.
Answer: 171 mm2
- A = length × width = 9 × 19
- = 171 mm2
3.A triangle has a base of 12 cm and a height of 3 cm. Find its area.
Answer: 18 cm2
- A = ½ × base × height = ½ × 12 × 3
- = 18 cm2
4.A rectangle is 3 mm long and 7 mm wide. Find its area.
Answer: 21 mm2
- A = length × width = 3 × 7
- = 21 mm2
5.A rectangle is 12 cm long and 20 cm wide. Find its perimeter.
Answer: 64 cm
- P = 2 × (12 + 20)
- = 2 × 32 = 64 cm
6.A rectangle is 13 cm long and 10 cm wide. Find its area.
Answer: 130 cm2
- A = length × width = 13 × 10
- = 130 cm2
7.A triangle has a base of 18 m and a height of 5 m. Find its area.
Answer: 45 m2
- A = ½ × base × height = ½ × 18 × 5
- = 45 m2
8.A rectangle is 14 cm long and 3 cm wide. Find its area.
Answer: 42 cm2
- A = length × width = 14 × 3
- = 42 cm2
9.A rectangle is 8 cm long and 13 cm wide. Find its perimeter.
Answer: 42 cm
- P = 2 × (8 + 13)
- = 2 × 21 = 42 cm
10.A rectangle is 13 mm long and 19 mm wide. Find its perimeter.
Answer: 64 mm
- P = 2 × (13 + 19)
- = 2 × 32 = 64 mm
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.