Year 6 Area and Perimeter Worksheet — Level 3 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 6 area & perimeter worksheet.
Year 6 Area and Perimeter Worksheet — Level 3 — Practice Set 3 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 22 mm long and 16 mm wide. Find its area.
Answer: 352 mm2
- A = length × width = 22 × 16
- = 352 mm2
2.An L-shape is made from a 18 cm by 14 cm rectangle joined to a 10 cm by 16 cm rectangle. Find the total area.
Answer: 412 cm2
- Rectangle 1: 18 × 14 = 252
- Rectangle 2: 10 × 16 = 160
- Total: 252 + 160 = 412 cm2
3.An L-shape is made from a 17 mm by 6 mm rectangle joined to a 14 mm by 10 mm rectangle. Find the total area.
Answer: 242 mm2
- Rectangle 1: 17 × 6 = 102
- Rectangle 2: 14 × 10 = 140
- Total: 102 + 140 = 242 mm2
4.A triangle has a base of 16 mm and a perpendicular height of 15 mm. Find its area.
Answer: 120 mm2
- A = ½ × base × height = ½ × 16 × 15
- = 120 mm2
5.A rectangle is 10 cm long and 13 cm wide. Find its area.
Answer: 130 cm2
- A = length × width = 10 × 13
- = 130 cm2
6.An L-shape is made from a 3 cm by 18 cm rectangle joined to a 2 cm by 3 cm rectangle. Find the total area.
Answer: 60 cm2
- Rectangle 1: 3 × 18 = 54
- Rectangle 2: 2 × 3 = 6
- Total: 54 + 6 = 60 cm2
7.A rectangle is 29 m long and 13 m wide. Find its area.
Answer: 377 m2
- A = length × width = 29 × 13
- = 377 m2
8.A rectangle is 26 mm long and 5 mm wide. Find its area.
Answer: 130 mm2
- A = length × width = 26 × 5
- = 130 mm2
9.A triangle has a base of 8 cm and a perpendicular height of 5 cm. Find its area.
Answer: 20 cm2
- A = ½ × base × height = ½ × 8 × 5
- = 20 cm2
10.A triangle has a base of 12 m and a perpendicular height of 6 m. Find its area.
Answer: 36 m2
- A = ½ × base × height = ½ × 12 × 6
- = 36 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.