Area of Rectangles Worksheets for 3rd Grade
Find the area of a rectangle by multiplying its length by its width. 15 free printable worksheets, each with an answer key.
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Click a worksheet to open the PDF, or grab the matching answer key. Every sheet prints on one page.
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Area of Rectangles: what children learn
A rectangle with a length and a width is covered by that many rows of squares, so its area is length × width. The answer is written in square units.
Area of Rectangles: worked example
A rectangle is 6 units long and 4 units wide. What is the area in square units? 24
Multiply the length by the width: 6 × 4 = 24. The area is 24 square units.
Area of Rectangles: a common mistake to watch for
Kids sometimes add the length and width, which gives the distance around, not the area.
Area of Rectangles: how to help at home or in class
Build a rectangle from tiles in rows, then draw it on grid paper and cover most of it with a card so only the first row and first column peek out. Your child uses a times fact to predict the total, then lifts the card to count and check. When your child reaches for multiplication on its own and writes square units, move on to finding unknown sides.
What is on these Area of Rectangles worksheets
This set has 15 different worksheets for 3rd grade, with 9 questions on each and a matching answer key for every sheet. The instruction printed on each worksheet is: “Multiply the length by the width. Write the area in square units.”
Every answer on every sheet is checked by a separate program before the worksheet is published. How we check answers