Area and Perimeter
Grade 3 Math · Oregon, USA
Measure the area and perimeter of shapes.
Lessons
What Is Perimeter?
Perimeter is the total distance around the outside of a shape. You find it by adding up all the side lengths.
Calculating Perimeter
You can use addition or shortcuts to find perimeter quickly, especially for rectangles and squares.
What Is Area?
Area is the amount of space inside a flat shape. It is measured in square units.
Measuring Area
You can find the area of a rectangle by multiplying its length by its width.
Area and Perimeter Together
Shapes can have the same perimeter but different areas, or the same area but different perimeters.
People Also Ask
What topics are in Area and Perimeter for Grade 3 Math?+
The Area and Perimeter chapter covers multiple lessons aligned to the Oregon curriculum. Browse all lessons below to see the full topic list.
Is Area and Perimeter part of the Oregon curriculum?+
Yes, Area and Perimeter is part of the official Grade 3 Math curriculum in Oregon, USA.