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  • 4th Grade
  • Math
  • About 10 minutes

Perimeter of Rectangles

Find the perimeter of each rectangle. Use P = 2 × l + 2 × w.

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Perimeter of RectanglesName:Date:Find the perimeter of each rectangle. Use P = 2 × l + 2 × w.13 m7 mP =m15 yd11 ydP =yd14 cm11 cmP =cm12 ft11 ftP =ft5 yd3 ydP =yd13 in10 inP =in12 ft12 ftP =ft10 m9 mP =mk5printables.com · Sheet #145624601 · Aligned with Common Core 4.MD.A.3

This is sheet #145624601.

How to do it

  1. Find the length and width.
  2. Use P = 2 × l + 2 × w.
  3. Write the perimeter with its unit.

Teaching tip

Double the length, double the width, then add. This sheet is aligned with Common Core 4.MD.A.3.

Perimeter of Rectangles worksheet for 4th grade (area and perimeter), free printable
Printable preview

About this worksheet

Rectangles and squares with labeled sides to find the perimeter. More uses sides up to 30.

What kids practice

Perimeter is the distance around a shape, and area is the space inside it. Fourth graders use formulas for rectangles. Perimeter is P = 2 × l + 2 × w, or 4 × s for a square. Area is A = l × w, measured in square units. They also work backward to find a missing side, like a rug with an area of 48 square feet and a width of 6 feet, which is 8 feet long.

Watch for

  • Mixing up area and perimeter, especially in word problems.
  • Adding only two sides for perimeter, like 8 + 5 = 13 instead of 26.
  • Writing perimeter in square units or area in plain units.
  • Dividing the perimeter by 4 to find the length of a rectangle that is not a square.

It's free to print, with Fewer, Standard or More on the page and an answer key. See the full area and perimeter guide for 4th grade.

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