Compare Area and Perimeter
Print 3rd grade worksheets comparing two rectangles: find each area and perimeter, then spot same area or same perimeter.
Worksheet version 1 of 12. The answer key matches the current version.
Find the area and perimeter of rectangles A and B. Count unit squares or use the side lengths. Then circle which rectangle has the greater area and greater perimeter, or circle same.
1. Find each area and perimeter.
| Rectangle | Area (square units) | Perimeter (units) |
|---|---|---|
| A | _____ | _____ |
| B | _____ | _____ |
Greater area: ABsame
Greater perimeter: ABsame
2. Find each area and perimeter.
| Rectangle | Area (square units) | Perimeter (units) |
|---|---|---|
| A | _____ | _____ |
| B | _____ | _____ |
Greater area: ABsame
Greater perimeter: ABsame
3. Find each area and perimeter.
| Rectangle | Area (square units) | Perimeter (units) |
|---|---|---|
| A | _____ | _____ |
| B | _____ | _____ |
Greater area: ABsame
Greater perimeter: ABsame
4. Find each area and perimeter.
| Rectangle | Area (square units) | Perimeter (units) |
|---|---|---|
| A | _____ | _____ |
| B | _____ | _____ |
Greater area: ABsame
Greater perimeter: ABsame
About this worksheet
Two rectangles can have the same area but different perimeters, or the same perimeter but different areas. Finding both measures for each rectangle shows that area and perimeter measure different things: the space inside and the distance around.
Every worksheet mixes pairs with the same area and different perimeters with pairs that have the same perimeter and different areas, so children cannot assume that a larger shape always has a longer boundary.
Print a student sheet, then choose “Show answer key” to print the matching answers. Choose “New worksheet” for another version; the answer key always follows the version on screen.
Practice aligned to CCSS 3.MD.D.8.
More practice: area and perimeter worksheets, area by counting unit squares, perimeter and missing sides and 3rd grade math worksheets.