Year 4 Area and Perimeter Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 4 area & perimeter worksheet.
Year 4 Area and Perimeter Worksheet — Level 2 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 5 cm long and 8 cm wide. Find its perimeter.
Answer: 26 cm
- P = 2 × (5 + 8)
- = 2 × 13 = 26 cm
2.A rectangle is 30 m long and 9 m wide. Find its perimeter.
Answer: 78 m
- P = 2 × (30 + 9)
- = 2 × 39 = 78 m
3.A triangle has a base of 15 mm and a perpendicular height of 11 mm. Find its area.
Answer: 82.5 mm2
- A = ½ × base × height = ½ × 15 × 11
- = 82.5 mm2
4.A rectangle is 26 m long and 3 m wide. Find its perimeter.
Answer: 58 m
- P = 2 × (26 + 3)
- = 2 × 29 = 58 m
5.A rectangle is 17 cm long and 15 cm wide. Find its area.
Answer: 255 cm2
- A = length × width = 17 × 15
- = 255 cm2
6.A rectangle is 17 cm long and 14 cm wide. Find its area.
Answer: 238 cm2
- A = length × width = 17 × 14
- = 238 cm2
7.A triangle has a base of 7 cm and a perpendicular height of 12 cm. Find its area.
Answer: 42 cm2
- A = ½ × base × height = ½ × 7 × 12
- = 42 cm2
8.A triangle has a base of 19 m and a perpendicular height of 9 m. Find its area.
Answer: 85.5 m2
- A = ½ × base × height = ½ × 19 × 9
- = 85.5 m2
9.A rectangle is 28 mm long and 15 mm wide. Find its area.
Answer: 420 mm2
- A = length × width = 28 × 15
- = 420 mm2
10.A triangle has a base of 10 mm and a perpendicular height of 3 mm. Find its area.
Answer: 15 mm2
- A = ½ × base × height = ½ × 10 × 3
- = 15 mm2
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.
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