Shark Learning
Fifth/Geometry

Perimeter of Squares and Rectangles

Find the perimeter of squares and rectangles given their side lengths.
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Study Guide

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Practice Questions

  1. What is the perimeter of a square with sides of 6 units?
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    (A) 24 units

  2. What is the perimeter of a rectangle with sides of 5 units and 3 units?
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    (A) 16 units

  3. What is the perimeter of a square with sides of 8 units?
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    (A) 32 units

  4. What is the perimeter of a rectangle with sides of 7 units and 2 units?
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    (A) 18 units

  5. What is the perimeter of a square with sides of 9 units?
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    (A) 36 units

Quick Tip
Tip: Add up the lengths of all the sides.
Teacher Resources
Teaching Notes

Introduce perimeter as the distance around a shape. Emphasize adding all side lengths for squares and rectangles.

Vocabulary
Perimeter: The total distance around a shape.
Square: A shape with four equal sides.
Rectangle: A shape with four sides and four right angles.
Common Mistakes
  • Calculating area instead of perimeter.
  • Forgetting to add all four sides (e.g., only adding length + width for a rectangle).
  • Not including units in the final answer.
Differentiation
SupportUse grid paper or physical manipulatives to trace and count sides.
ChallengeIntroduce finding a missing side given the perimeter and other sides.
Discussion Questions
  • What does 'perimeter' mean in your own words?
  • Can you think of real-life examples where knowing the perimeter is important?
  • How is finding the perimeter of a square different from a rectangle?
  • What if a rectangle has a length of 7 units and a width of 4 units?
Extension Activities
  • Find perimeter of classroom objects.
  • Draw shapes with a target perimeter.
  • Calculate perimeter with different units.
Parent Tip

Measure the edges of a rug or table and add them up.

Learning Path
Skill Cluster

Geometry and Measurement

Estimated Time

15 minutes

Skills Practiced
Calculate perimeterPerimeter squaresPerimeter rectangles