Year 4 Area and Perimeter Worksheet — Level 2 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 4 area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · Area & PerimeterYear 4 Area and Perimeter Worksheet — Level 2 — Practice Set 3 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 14 mm long and 3 mm wide. Find its perimeter.
Answer: 34 mm
- P = 2 × (14 + 3)
- = 2 × 17 = 34 mm
2.A rectangle is 3 m long and 19 m wide. Find its area.
Answer: 57 m2
- A = length × width = 3 × 19
- = 57 m2
3.A rectangle is 8 m long and 4 m wide. Find its area.
Answer: 32 m2
- A = length × width = 8 × 4
- = 32 m2
4.A rectangle is 30 cm long and 9 cm wide. Find its perimeter.
Answer: 78 cm
- P = 2 × (30 + 9)
- = 2 × 39 = 78 cm
5.A triangle has a base of 9 m and a perpendicular height of 6 m. Find its area.
Answer: 27 m2
- A = ½ × base × height = ½ × 9 × 6
- = 27 m2
6.A rectangle is 2 mm long and 3 mm wide. Find its area.
Answer: 6 mm2
- A = length × width = 2 × 3
- = 6 mm2
7.A triangle has a base of 16 m and a perpendicular height of 11 m. Find its area.
Answer: 88 m2
- A = ½ × base × height = ½ × 16 × 11
- = 88 m2
8.A triangle has a base of 17 m and a perpendicular height of 5 m. Find its area.
Answer: 42.5 m2
- A = ½ × base × height = ½ × 17 × 5
- = 42.5 m2
9.A rectangle is 19 m long and 9 m wide. Find its perimeter.
Answer: 56 m
- P = 2 × (19 + 9)
- = 2 × 28 = 56 m
10.A triangle has a base of 16 cm and a perpendicular height of 8 cm. Find its area.
Answer: 64 cm2
- A = ½ × base × height = ½ × 16 × 8
- = 64 cm2
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.