Perimeter of Rectangles

Calculate the perimeter of various rectangles by adding the lengths of their sides. Aligned with Grade 3 geometry standards.

Grade 3 Math GeometryPerimeterPerimeter of a Rectangle

Use This Worksheet

Includes

2 Short AnswerFill in the BlanksMultiple ChoiceTrue / False

Standards

CCSS.MATH.CONTENT.3.MD.D.8

Topics

mathgeometryperimeterrectanglegrade 3

7 sections · Free to use · Printable

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Read each question carefully and calculate the perimeter of each rectangle. Remember, perimeter is the total distance around the outside of a shape.

1. What is the perimeter of a rectangle with a length of 7 cm and a width of 4 cm?

2. A rectangular garden is 10 meters long and 5 meters wide. What is its perimeter?

3. To find the perimeter of a rectangle, you add the lengths of all its .

4. If a rectangle has sides of 6 inches and 3 inches, its perimeter is inches.

5. The formula for the perimeter of a rectangle can be written as P = 2 × (length + ).

6. Which of these rectangles has a perimeter of 18 units?

7. A square is a special type of rectangle, so you can find its perimeter by adding all four equal sides.

True

False

8. If you double the length and width of a rectangle, its perimeter also doubles.

True

False

9. A rectangular swimming pool has a perimeter of 40 feet. If its length is 12 feet, what is its width? Show your work.