5th Grade Area and Perimeter Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 5th Grade area & perimeter worksheet.
5th Grade Area and Perimeter Worksheet — Level 1 — Practice Set 4 — Answers
Write the formula, substitute, then calculate. Include units.
1.A rectangle is 5 mm long and 8 mm wide. Find its area.
Answer: 40 mm2
- A = length × width = 5 × 8
- = 40 mm2
2.A rectangle is 6 cm long and 3 cm wide. Find its area.
Answer: 18 cm2
- A = length × width = 6 × 3
- = 18 cm2
3.A rectangle is 12 m long and 9 m wide. Find its perimeter.
Answer: 42 m
- P = 2 × (12 + 9)
- = 2 × 21 = 42 m
4.A rectangle is 3 cm long and 6 cm wide. Find its area.
Answer: 18 cm2
- A = length × width = 3 × 6
- = 18 cm2
5.A rectangle is 10 mm long and 10 mm wide. Find its area.
Answer: 100 mm2
- A = length × width = 10 × 10
- = 100 mm2
6.A rectangle is 8 m long and 4 m wide. Find its area.
Answer: 32 m2
- A = length × width = 8 × 4
- = 32 m2
7.A rectangle is 6 mm long and 3 mm wide. Find its area.
Answer: 18 mm2
- A = length × width = 6 × 3
- = 18 mm2
8.A rectangle is 8 mm long and 7 mm wide. Find its perimeter.
Answer: 30 mm
- P = 2 × (8 + 7)
- = 2 × 15 = 30 mm
9.A rectangle is 3 mm long and 11 mm wide. Find its perimeter.
Answer: 28 mm
- P = 2 × (3 + 11)
- = 2 × 14 = 28 mm
10.A rectangle is 6 m long and 8 m wide. Find its area.
Answer: 48 m2
- A = length × width = 6 × 8
- = 48 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.
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