Grade 3 · Math · Measurement

3rd Grade Area and Perimeter worksheets

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Area and Perimeter

Grade 3 Math Worksheet

NameDate

Find the area of each rectangle.

A bulletin board is 10 feet long and 8 feet wide. Area in square feet:
A poster is 4 inches long and 2 inches wide. Area in square inches:
A pool deck is 11 meters long and 8 meters wide. Area in square meters:
A garden is 11 meters long and 5 meters wide. Area in square meters:
A rug is 6 feet long and 2 feet wide. Area in square feet:
A sandbox is 12 feet long and 2 feet wide. Area in square feet:
A table top is 9 feet long and 6 feet wide. Area in square feet:
A playground is 11 meters long and 3 meters wide. Area in square meters:
A window is 10 feet long and 9 feet wide. Area in square feet:
A stage is 10 meters long and 7 meters wide. Area in square meters:

3rd Grade Area and Perimeter worksheet 1 – printable PDF — Download PDF: 1 2 3 4 5 6

About this worksheet

Area and perimeter are both measurements of a rectangle, but they measure different things. Area is the space inside, counted in square units: a rectangle 6 meters long and 4 meters wide covers 24 square meters. Perimeter is the distance around the outside, counted in plain units: the same rectangle has a perimeter of 20 meters. This topic has both skills, and each worksheet practices one: the odd-numbered versions ask for the area of ten rectangles and the even-numbered versions ask for the perimeter.

Each problem names the thing, such as a rug, a garden or a poster, and its length and width, and the unit fits the thing. The numbers stay small at Building Confidence and grow at On Level and Challenge Me. Missing-side problems have their own worksheet.

What your child will learn

Find the area of a rectangle by multiplying length and width
Find the perimeter of a rectangle by adding the sides
Say how area and perimeter differ

Common Core standard: 3.MD.C.7, 3.MD.D.8

Worked example

A rug is 6 feet long and 4 feet wide. Area: 6 x 4 = 24 square feet. Perimeter: 6 + 4 + 6 + 4 = 20 feet.

Common mistake

Adding the two sides when the problem asks for area, or multiplying them when it asks for perimeter.

Helpful hint

Area covers the inside, so multiply. Perimeter goes around the edge, so add all the sides.

Next skill: Perimeter Word Problems Earlier: Find the Perimeter of Rectangles

Questions parents ask

What is the most common mistake with area and perimeter?

Adding the two sides when the problem asks for area, or multiplying them when it asks for perimeter.

How can I help my child with area and perimeter?

Area covers the inside, so multiply. Perimeter goes around the edge, so add all the sides.

Are these 3rd grade math worksheets free to print?

Yes. All 6 printable versions on this page are free to download and print, with no account needed.

More 3rd grade measurement

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