4th Grade Area and Perimeter Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 4th Grade area & perimeter worksheet.
4th Grade Area and Perimeter Worksheet — Level 1 — Practice Set 3 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 7 mm long and 11 mm wide. Find its perimeter.
Answer: 36 mm
- P = 2 × (7 + 11)
- = 2 × 18 = 36 mm
2.A rectangle is 10 m long and 4 m wide. Find its perimeter.
Answer: 28 m
- P = 2 × (10 + 4)
- = 2 × 14 = 28 m
3.A rectangle is 6 mm long and 11 mm wide. Find its perimeter.
Answer: 34 mm
- P = 2 × (6 + 11)
- = 2 × 17 = 34 mm
4.A rectangle is 11 cm long and 5 cm wide. Find its perimeter.
Answer: 32 cm
- P = 2 × (11 + 5)
- = 2 × 16 = 32 cm
5.A rectangle is 10 mm long and 3 mm wide. Find its area.
Answer: 30 mm2
- A = length × width = 10 × 3
- = 30 mm2
6.A rectangle is 10 cm long and 2 cm wide. Find its perimeter.
Answer: 24 cm
- P = 2 × (10 + 2)
- = 2 × 12 = 24 cm
7.A rectangle is 8 cm long and 11 cm wide. Find its area.
Answer: 88 cm2
- A = length × width = 8 × 11
- = 88 cm2
8.A rectangle is 5 cm long and 3 cm wide. Find its area.
Answer: 15 cm2
- A = length × width = 5 × 3
- = 15 cm2
9.A rectangle is 11 m long and 11 m wide. Find its perimeter.
Answer: 44 m
- P = 2 × (11 + 11)
- = 2 × 22 = 44 m
10.A rectangle is 7 mm long and 9 mm wide. Find its area.
Answer: 63 mm2
- A = length × width = 7 × 9
- = 63 mm2
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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