Year 6 Area and Perimeter Worksheet — Level 3 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 6 area & perimeter worksheet.
Year 6 Area and Perimeter Worksheet — Level 3 — Practice Set 2 — Answers
Write the formula, substitute, then calculate. Include units.
1.A triangle has a base of 20 cm and a perpendicular height of 7 cm. Find its area.
Answer: 70 cm2
- A = ½ × base × height = ½ × 20 × 7
- = 70 cm2
2.A triangle has a base of 8 mm and a perpendicular height of 6 mm. Find its area.
Answer: 24 mm2
- A = ½ × base × height = ½ × 8 × 6
- = 24 mm2
3.A rectangle is 6 cm long and 5 cm wide. Find its area.
Answer: 30 cm2
- A = length × width = 6 × 5
- = 30 cm2
4.A rectangle is 19 m long and 19 m wide. Find its area.
Answer: 361 m2
- A = length × width = 19 × 19
- = 361 m2
5.A rectangle is 8 mm long and 18 mm wide. Find its area.
Answer: 144 mm2
- A = length × width = 8 × 18
- = 144 mm2
6.A triangle has a base of 15 cm and a perpendicular height of 9 cm. Find its area.
Answer: 67.5 cm2
- A = ½ × base × height = ½ × 15 × 9
- = 67.5 cm2
7.A rectangle is 10 cm long and 16 cm wide. Find its area.
Answer: 160 cm2
- A = length × width = 10 × 16
- = 160 cm2
8.A triangle has a base of 12 cm and a perpendicular height of 3 cm. Find its area.
Answer: 18 cm2
- A = ½ × base × height = ½ × 12 × 3
- = 18 cm2
9.An L-shape is made from a 13 m by 16 m rectangle joined to a 6 m by 17 m rectangle. Find the total area.
Answer: 310 m2
- Rectangle 1: 13 × 16 = 208
- Rectangle 2: 6 × 17 = 102
- Total: 208 + 102 = 310 m2
10.A rectangle is 10 m long and 4 m wide. Find its area.
Answer: 40 m2
- A = length × width = 10 × 4
- = 40 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.