Year 5 Area and Perimeter Worksheet — Level 3 — Answers
Answer sheet with worked solutions for the Year 5 area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheetYear 5 · Mathematics · Area & PerimeterYear 5 Area and Perimeter Worksheet — Level 3 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 22 mm long and 8 mm wide. Find its area.
Answer: 176 mm2
- A = length × width = 22 × 8
- = 176 mm2
2.An L-shape is made from a 26 cm by 11 cm rectangle joined to a 7 cm by 2 cm rectangle. Find the total area.
Answer: 300 cm2
- Rectangle 1: 26 × 11 = 286
- Rectangle 2: 7 × 2 = 14
- Total: 286 + 14 = 300 cm2
3.An L-shape is made from a 15 mm by 9 mm rectangle joined to a 12 mm by 9 mm rectangle. Find the total area.
Answer: 243 mm2
- Rectangle 1: 15 × 9 = 135
- Rectangle 2: 12 × 9 = 108
- Total: 135 + 108 = 243 mm2
4.An L-shape is made from a 6 mm by 15 mm rectangle joined to a 3 mm by 19 mm rectangle. Find the total area.
Answer: 147 mm2
- Rectangle 1: 6 × 15 = 90
- Rectangle 2: 3 × 19 = 57
- Total: 90 + 57 = 147 mm2
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 rectangle is 12 mm long and 20 mm wide. Find its area.
Answer: 240 mm2
- A = length × width = 12 × 20
- = 240 mm2
7.A triangle has a base of 7 m and a perpendicular height of 10 m. Find its area.
Answer: 35 m2
- A = ½ × base × height = ½ × 7 × 10
- = 35 m2
8.A triangle has a base of 20 mm and a perpendicular height of 14 mm. Find its area.
Answer: 140 mm2
- A = ½ × base × height = ½ × 20 × 14
- = 140 mm2
9.An L-shape is made from a 10 cm by 8 cm rectangle joined to a 7 cm by 9 cm rectangle. Find the total area.
Answer: 143 cm2
- Rectangle 1: 10 × 8 = 80
- Rectangle 2: 7 × 9 = 63
- Total: 80 + 63 = 143 cm2
10.A triangle has a base of 10 cm and a perpendicular height of 12 cm. Find its area.
Answer: 60 cm2
- A = ½ × base × height = ½ × 10 × 12
- = 60 cm2
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