Perimeter: printable worksheets
Find the perimeter of rectangles, squares, L-shaped figures and polygons by adding the side lengths.
Sample worksheet
The first 6 problems of a real worksheet, made the way the builder makes it. Open it in the builder to change the number of problems, the difficulty and the layout, then print.
1.
Find the perimeter.
2.
The perimeter is 52 inches. One side is 14 inches. How long is the other side?
3.
Find the perimeter.
4.
A square has a perimeter of 80 inches. How long is each side?
5.
Find the perimeter.
6.
The perimeter is 62 inches. One side is 14 inches. How long is the other side?
Show answers
1.58 inches
2.12 inches
3.68 inches
4.20 inches
5.64 inches
6.17 inches
What students practise
I can find area by counting unit squares or multiplying, and perimeter by adding side lengths.
Students understand area as the number of unit squares that cover a shape with no gaps or overlaps and perimeter as the distance around it, then find both for rectangles and rectilinear figures.
Key words
- area
- the number of unit squares that cover a shape
- perimeter
- the distance around a shape
- unit square
- a square with sides one unit long
- square unit
- the unit that measures area
- side length
- how long one side of a shape is
Common mistakes
- Finds the area when asked for the perimeter, or the perimeter when asked for the area.
- Writes units for an area, or square units for a perimeter.
- Adds only the labelled sides of an L-shaped figure.
Standards
Common Core State Standards this worksheet practises.
- 3.MD.D.8: Solve real world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths, finding an unknown side length, and exhibiting rectangles with the same perimeter and different areas or with the same area and different perimeters. (unverified)
Related topics
- Before this: Area (Grade 3)
- Next: Perimeter and area (Grade 4)