Year 6 Area and Perimeter Worksheet — Level 3 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 6 area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheetYear 6 · Mathematics · Area & PerimeterYear 6 Area and Perimeter Worksheet — Level 3 — Practice Set 3 — Answers
Write the formula, substitute, then calculate. Include units.
1.A triangle has a base of 16 mm and a perpendicular height of 12 mm. Find its area.
Answer: 96 mm2
- A = ½ × base × height = ½ × 16 × 12
- = 96 mm2
2.An L-shape is made from a 27 mm by 11 mm rectangle joined to a 2 mm by 2 mm rectangle. Find the total area.
Answer: 301 mm2
- Rectangle 1: 27 × 11 = 297
- Rectangle 2: 2 × 2 = 4
- Total: 297 + 4 = 301 mm2
3.A rectangle is 29 cm long and 6 cm wide. Find its area.
Answer: 174 cm2
- A = length × width = 29 × 6
- = 174 cm2
4.A rectangle is 4 mm long and 9 mm wide. Find its area.
Answer: 36 mm2
- A = length × width = 4 × 9
- = 36 mm2
5.A triangle has a base of 12 cm and a perpendicular height of 7 cm. Find its area.
Answer: 42 cm2
- A = ½ × base × height = ½ × 12 × 7
- = 42 cm2
6.A triangle has a base of 4 mm and a perpendicular height of 14 mm. Find its area.
Answer: 28 mm2
- A = ½ × base × height = ½ × 4 × 14
- = 28 mm2
7.An L-shape is made from a 19 cm by 6 cm rectangle joined to a 5 cm by 3 cm rectangle. Find the total area.
Answer: 129 cm2
- Rectangle 1: 19 × 6 = 114
- Rectangle 2: 5 × 3 = 15
- Total: 114 + 15 = 129 cm2
8.A triangle has a base of 5 mm and a perpendicular height of 14 mm. Find its area.
Answer: 35 mm2
- A = ½ × base × height = ½ × 5 × 14
- = 35 mm2
9.A rectangle is 11 mm long and 6 mm wide. Find its area.
Answer: 66 mm2
- A = length × width = 11 × 6
- = 66 mm2
10.An L-shape is made from a 3 m by 12 m rectangle joined to a 2 m by 13 m rectangle. Find the total area.
Answer: 62 m2
- Rectangle 1: 3 × 12 = 36
- Rectangle 2: 2 × 13 = 26
- Total: 36 + 26 = 62 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.