Year 4 Area and Perimeter Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 4 area & perimeter worksheet.
Year 4 Area and Perimeter Worksheet — Level 2 — Practice Set 2 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 4 cm long and 3 cm wide. Find its area.
Answer: 12 cm2
- A = length × width = 4 × 3
- = 12 cm2
2.A triangle has a base of 4 cm and a perpendicular height of 10 cm. Find its area.
Answer: 20 cm2
- A = ½ × base × height = ½ × 4 × 10
- = 20 cm2
3.A rectangle is 16 cm long and 19 cm wide. Find its area.
Answer: 304 cm2
- A = length × width = 16 × 19
- = 304 cm2
4.A triangle has a base of 16 cm and a perpendicular height of 13 cm. Find its area.
Answer: 104 cm2
- A = ½ × base × height = ½ × 16 × 13
- = 104 cm2
5.A rectangle is 22 cm long and 18 cm wide. Find its perimeter.
Answer: 80 cm
- P = 2 × (22 + 18)
- = 2 × 40 = 80 cm
6.A rectangle is 21 mm long and 11 mm wide. Find its perimeter.
Answer: 64 mm
- P = 2 × (21 + 11)
- = 2 × 32 = 64 mm
7.A rectangle is 5 m long and 3 m wide. Find its perimeter.
Answer: 16 m
- P = 2 × (5 + 3)
- = 2 × 8 = 16 m
8.A rectangle is 30 m long and 6 m wide. Find its perimeter.
Answer: 72 m
- P = 2 × (30 + 6)
- = 2 × 36 = 72 m
9.A rectangle is 2 cm long and 13 cm wide. Find its perimeter.
Answer: 30 cm
- P = 2 × (2 + 13)
- = 2 × 15 = 30 cm
10.A triangle has a base of 15 m and a perpendicular height of 3 m. Find its area.
Answer: 22.5 m2
- A = ½ × base × height = ½ × 15 × 3
- = 22.5 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.