💬 Perimeter: Mixed Practice & Reasoning (3.MD.D.8)

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Solve real-world problems involving perimeters of polygons. Read each problem. Draw or write to solve. Label your answer.

1. Rectangle 5 m by 15 m. Perimeter = ___ m

Work

Answer: ______________

2. A rectangle has perimeter 12 m and length 3 m. Width = ___ m

Work

Answer: ______________

3. Rectangle 19 m by 13 m. Perimeter = ___ m

Work

Answer: ______________

4. A rectangle has perimeter 52 m and length 19 m. Width = ___ m

Work

Answer: ______________

5. Rectangle 2 m by 7 m. Perimeter = ___ m

Work

Answer: ______________

6. A rectangle has perimeter 22 m and length 5 m. Width = ___ m

Work

Answer: ______________

Answer key: 1) 40 · 2) 3 · 3) 64 · 4) 7 · 5) 18 · 6) 6

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Worksheets › Grade 3 Math › Perimeter › Perimeter

Grade 3 (ages 8–9)Numbers & mathsFree printable PDF

About this grade 3 worksheet

Free Grade 3 math worksheet (Common Core 3.MD.D.8): perimeter — mixed practice with space to reason and check, with answer key. Skill: Solve real-world problems involving perimeters of polygons. Level: Grade 3 — also suits Year 4 (UK).

For teachers: skills & standards

CCSS 3.MD.D.8: Solve problems involving perimeter
Works as a morning-work page, a centre/station activity, homework or an early-finisher task.

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What age is it for?

It is designed for Grade 3 (ages 8–9), but use it with any child who is ready.

What skills does it build?

Solve real-world problems involving perimeters of polygons.

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More “Perimeter” printables (3.md.d.8: solve real-world problems involving perimeters of polygons)

Perimeter: Practice A (3.MD.D.8) · Perimeter: Practice B (3.MD.D.8) · Perimeter: Show Your Thinking (3.MD.D.8) · Perimeter: Quick Check (3.MD.D.8)

All 5 perimeter sheets → · Grade 3 Math: all 10 skills → · All Common Core grades

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