This grade 3 area worksheet gives 22 problems on area, ordered from easy to hard, with a separate answer key.
These 22 problems practice area with unit squares, multiplying side lengths, the distributive property and L-shaped figures (3.MD.C.5, 3.MD.C.6, 3.MD.C.7). They start with counting squares and end with word problems that use more than one step. Work in order and show each multiplication sentence.
Grade 3 Area Worksheet: problems 1–5
Problem 1: Count the unit squares
Count the unit squares to find the area of the rectangle. Each square is 1 square centimeter.
Problem 2: Rows and columns
Write a multiplication sentence for the rectangle and find its area. Each square is 1 square inch.
Problem 3: Tiles in rows
Maya covers a small rectangle on the floor with square tiles. She makes 4 rows with 6 tiles in each row. Each tile is 1 square foot. Find the area.
Problem 4: Compare two shapes
Find the area of Shape A and of Shape B. Each square is 1 square unit. Do the two shapes cover the same amount of flat space?
Problem 5: Multiply to find area
A rectangle is 8 feet long and 3 feet wide. Find its area.
Grade 3 Area Worksheet: problems 6–10
Problem 6: Garden in square meters
Jamal plants a rectangular garden that is 9 meters long and 5 meters wide. Find the area of the garden.
Problem 7: Area of a square
A square picture frame has sides that are each 7 inches long. Find the area of the square.
Problem 8: Labeled rectangle
Find the area of the rectangle.
Problem 9: Missing width
A rectangle has an area of 36 square inches and a length of 9 inches. Find the width.
Problem 10: Missing length
Find the missing length of the rectangle.
Grade 3 Area Worksheet: problems 11–15
Problem 11: Break apart a rectangle
The rectangle is split into two parts. Find the area of each part, then find the area of the whole rectangle.
Problem 12: Break apart a factor
Find \(7 \times 9\) by breaking 9 into \(5 + 4\) and using the distributive property.
Problem 13: Write the area as a sum
A rectangle is 5 feet wide and 12 feet long. It is split as shown. Write the area as a sum of two products and find the total area.
Problem 14: L-shaped room
Find the area of the L-shaped room. All corners are square corners.
Problem 15: T-shaped sign
Liam makes a T-shaped sign for the school store. Find the area of the sign. All corners are square corners.
Grade 3 Area Worksheet: problems 16–20
Problem 16: Floor tiles
Aisha tiles a floor that is 10 feet long and 8 feet wide. Each tile is 1 square foot. How many tiles does she need?
Problem 17: Store and closet
The school store has a main room that is 8 feet by 6 feet and a closet that is 4 feet by 3 feet. What is the total floor area of the two rooms?
Problem 18: Whose rug is bigger?
Priya has a rug that is 6 feet by 4 feet. Diego has a square rug that is 5 feet on each side. Whose rug covers more floor, and how much more?
Problem 19: Backyard in two parts
Ethan’s backyard has two rectangular parts next to each other. One part is 9 feet by 6 feet and the other is 4 feet by 6 feet. Find the total area two ways: by adding the two areas, and by finding the area of one big rectangle.
Problem 20: Store sign
Sofia makes a sign from two rectangles of poster board. One is 10 inches by 4 inches and the other is 6 inches by 3 inches. What is the total area of the poster board?
Grade 3 Area Worksheet: problems 21–22
Problem 21: Find the mistake
Noah says that a rectangle 7 units long and 6 units wide has an area of 13 square units. Explain his mistake and find the correct area.
Problem 22: Same area, different rectangles
List all the rectangles with whole-number side lengths that have an area of 12 square units. A 2-by-6 rectangle and a 6-by-2 rectangle count as the same rectangle.
How to use this grade 3 area worksheet
Print this grade 3 area worksheet as a PDF, solve every problem on paper, then compare with the answer key.
See every chapter on the Grade 3 math page.
