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Year 4 Area and Perimeter Worksheet — Level 3 — Practice Set 4 — Answers

Answer sheet with worked solutions for the Year 4 area & perimeter worksheet.

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Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · Area & Perimeter

Year 4 Area and Perimeter Worksheet — Level 3 — Practice Set 4 — Answers

Write the formula, substitute, then calculate. Include units.

1.An L-shape is made from a 11 cm by 13 cm rectangle joined to a 10 cm by 13 cm rectangle. Find the total area.

Answer: 273 cm2

  1. Rectangle 1: 11 × 13 = 143
  2. Rectangle 2: 10 × 13 = 130
  3. Total: 143 + 130 = 273 cm2
2.A rectangle is 3 mm long and 20 mm wide. Find its area.

Answer: 60 mm2

  1. A = length × width = 3 × 20
  2. = 60 mm2
3.A triangle has a base of 11 mm and a perpendicular height of 12 mm. Find its area.

Answer: 66 mm2

  1. A = ½ × base × height = ½ × 11 × 12
  2. = 66 mm2
4.A rectangle is 7 mm long and 9 mm wide. Find its area.

Answer: 63 mm2

  1. A = length × width = 7 × 9
  2. = 63 mm2
5.A triangle has a base of 13 m and a perpendicular height of 3 m. Find its area.

Answer: 19.5 m2

  1. A = ½ × base × height = ½ × 13 × 3
  2. = 19.5 m2
6.An L-shape is made from a 4 mm by 9 mm rectangle joined to a 3 mm by 4 mm rectangle. Find the total area.

Answer: 48 mm2

  1. Rectangle 1: 4 × 9 = 36
  2. Rectangle 2: 3 × 4 = 12
  3. Total: 36 + 12 = 48 mm2
7.An L-shape is made from a 22 cm by 9 cm rectangle joined to a 15 cm by 4 cm rectangle. Find the total area.

Answer: 258 cm2

  1. Rectangle 1: 22 × 9 = 198
  2. Rectangle 2: 15 × 4 = 60
  3. Total: 198 + 60 = 258 cm2
8.An L-shape is made from a 13 m by 2 m rectangle joined to a 3 m by 6 m rectangle. Find the total area.

Answer: 44 m2

  1. Rectangle 1: 13 × 2 = 26
  2. Rectangle 2: 3 × 6 = 18
  3. Total: 26 + 18 = 44 m2
9.An L-shape is made from a 2 cm by 5 cm rectangle joined to a 2 cm by 5 cm rectangle. Find the total area.

Answer: 20 cm2

  1. Rectangle 1: 2 × 5 = 10
  2. Rectangle 2: 2 × 5 = 10
  3. Total: 10 + 10 = 20 cm2
10.A triangle has a base of 6 cm and a perpendicular height of 12 cm. Find its area.

Answer: 36 cm2

  1. A = ½ × base × height = ½ × 6 × 12
  2. = 36 cm2
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