Perimeter worksheet
Six rectangles, squares and triangles per sheet. The child adds the side lengths to find the distance all the way around. Start with every side marked, then move to the set where the matching sides are left blank. Free, no account, no ads.
Side lengths
Every side has its number. Add them all up. New version prints a fresh set of six at the same level.
About these figures
Each figure is drawn to match its own numbers, so a side marked 8 really is twice a side marked 4 on that same figure. Lengths are in units rather than inches or centimetres, so the sheet prints correctly at any size and on any printer.
Find the perimeter
Add the lengths of all the sides. Every side is marked in units.
- Perimeter =units
- Perimeter =units
- Perimeter =units
- Perimeter =units
- Perimeter =units
- Perimeter =units
How it works
Perimeter is the distance around the outside of a shape. The child starts at one corner, travels all the way around the edge, and adds every side length on the way. On the first set every side carries its number, so the whole job is finding all the numbers and adding them.
Why some sides have no number
On the harder set a rectangle shows only one length and one width, and a square or an equal-sided triangle shows only one side. Nothing is missing from the picture: the opposite sides of a rectangle are the same length, and every side of a square is the same, so the child can work the rest out. That step is the real skill, and it is why a perimeter sheet is more than an adding sheet.
Lengths are in units, not inches
Every side is marked in plain units rather than inches or centimetres. That keeps the sheet honest: a printer set to fit-to-page shrinks the picture, and a sheet that claimed real inches would then be wrong. Each figure is still drawn to match its own numbers, so a side marked 8 is twice a side marked 4 on that same figure.
Where it fits
Perimeter usually comes after a child can name shapes and knows how many sides they have. If that step is still in progress, try sides and corners or identify the shapes. When plain written addition is the thing to practise, you can make a worksheet in seconds.