4th Grade Area and Perimeter Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 4th Grade area & perimeter worksheet.
4th Grade Area and Perimeter Worksheet — Level 1 — Practice Set 4 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 11 mm long and 6 mm wide. Find its area.
Answer: 66 mm2
- A = length × width = 11 × 6
- = 66 mm2
2.A rectangle is 5 m long and 3 m wide. Find its perimeter.
Answer: 16 m
- P = 2 × (5 + 3)
- = 2 × 8 = 16 m
3.A rectangle is 10 cm long and 2 cm wide. Find its area.
Answer: 20 cm2
- A = length × width = 10 × 2
- = 20 cm2
4.A rectangle is 10 mm long and 4 mm wide. Find its perimeter.
Answer: 28 mm
- P = 2 × (10 + 4)
- = 2 × 14 = 28 mm
5.A rectangle is 10 m long and 10 m wide. Find its perimeter.
Answer: 40 m
- P = 2 × (10 + 10)
- = 2 × 20 = 40 m
6.A rectangle is 6 mm long and 5 mm wide. Find its area.
Answer: 30 mm2
- A = length × width = 6 × 5
- = 30 mm2
7.A rectangle is 12 mm long and 4 mm wide. Find its area.
Answer: 48 mm2
- A = length × width = 12 × 4
- = 48 mm2
8.A rectangle is 2 cm long and 10 cm wide. Find its area.
Answer: 20 cm2
- A = length × width = 2 × 10
- = 20 cm2
9.A rectangle is 12 m long and 3 m wide. Find its area.
Answer: 36 m2
- A = length × width = 12 × 3
- = 36 m2
10.A rectangle is 4 cm long and 2 cm wide. Find its area.
Answer: 8 cm2
- A = length × width = 4 × 2
- = 8 cm2
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.
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