4th Grade Area and Perimeter Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the 4th Grade area & perimeter worksheet.
4th Grade Area and Perimeter Worksheet — Level 2 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 13 m long and 16 m wide. Find its perimeter.
Answer: 58 m
- P = 2 × (13 + 16)
- = 2 × 29 = 58 m
2.A rectangle is 22 m long and 15 m wide. Find its area.
Answer: 330 m2
- A = length × width = 22 × 15
- = 330 m2
3.A triangle has a base of 10 cm and a height of 11 cm. Find its area.
Answer: 55 cm2
- A = ½ × base × height = ½ × 10 × 11
- = 55 cm2
4.A rectangle is 20 mm long and 20 mm wide. Find its area.
Answer: 400 mm2
- A = length × width = 20 × 20
- = 400 mm2
5.A triangle has a base of 8 m and a height of 6 m. Find its area.
Answer: 24 m2
- A = ½ × base × height = ½ × 8 × 6
- = 24 m2
6.A rectangle is 7 cm long and 12 cm wide. Find its area.
Answer: 84 cm2
- A = length × width = 7 × 12
- = 84 cm2
7.A rectangle is 19 mm long and 17 mm wide. Find its perimeter.
Answer: 72 mm
- P = 2 × (19 + 17)
- = 2 × 36 = 72 mm
8.A triangle has a base of 13 m and a height of 9 m. Find its area.
Answer: 58.5 m2
- A = ½ × base × height = ½ × 13 × 9
- = 58.5 m2
9.A rectangle is 17 mm long and 16 mm wide. Find its area.
Answer: 272 mm2
- A = length × width = 17 × 16
- = 272 mm2
10.A triangle has a base of 6 m and a height of 10 m. Find its area.
Answer: 30 m2
- A = ½ × base × height = ½ × 6 × 10
- = 30 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.