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Perimeter of Polygons & Unknown Sides — Easy Worksheet 2
Grade 3 · MathSheets Name: ____________________ Date: __________
Solve each problem. Shapes are not drawn to scale.
How to solve
Perimeter is the distance all the way around a shape: add every side length. If one side is missing, add the sides you know and subtract that sum from the perimeter. A rectangle has two pairs of equal sides.
Example
What is the perimeter of the shape in centimeters?
Answer: 19
✓ Correct!
Not quite. The answer is
💡 How to solve: Perimeter of Polygons & Unknown Sides
Perimeter is the distance all the way around a shape: add every side length. If one side is missing, add the sides you know and subtract that sum from the perimeter. A rectangle has two pairs of equal sides.
Try a similar one
What is the perimeter of the shape in feet?
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Perimeter of Polygons & Unknown Sides
Perimeter is the distance all the way around a shape: add every side length. If one side is missing, add the sides you know and subtract that sum from the perimeter. A rectangle has two pairs of equal sides.
Try a similar one
What is the perimeter of the shape in feet?
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Perimeter of Polygons & Unknown Sides
Perimeter is the distance all the way around a shape: add every side length. If one side is missing, add the sides you know and subtract that sum from the perimeter. A rectangle has two pairs of equal sides.
Try a similar one
What is the perimeter of the shape in centimeters?
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Perimeter of Polygons & Unknown Sides
Perimeter is the distance all the way around a shape: add every side length. If one side is missing, add the sides you know and subtract that sum from the perimeter. A rectangle has two pairs of equal sides.
Try a similar one
What is the perimeter of the shape in meters?
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Perimeter of Polygons & Unknown Sides
Perimeter is the distance all the way around a shape: add every side length. If one side is missing, add the sides you know and subtract that sum from the perimeter. A rectangle has two pairs of equal sides.
Try a similar one
What is the perimeter of the shape in feet?
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Perimeter of Polygons & Unknown Sides
Perimeter is the distance all the way around a shape: add every side length. If one side is missing, add the sides you know and subtract that sum from the perimeter. A rectangle has two pairs of equal sides.
Try a similar one
What is the perimeter of the shape in inches?
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Perimeter of Polygons & Unknown Sides
Perimeter is the distance all the way around a shape: add every side length. If one side is missing, add the sides you know and subtract that sum from the perimeter. A rectangle has two pairs of equal sides.
Try a similar one
What is the perimeter of the shape in inches?
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Perimeter of Polygons & Unknown Sides
Perimeter is the distance all the way around a shape: add every side length. If one side is missing, add the sides you know and subtract that sum from the perimeter. A rectangle has two pairs of equal sides.
Try a similar one
What is the perimeter of the shape in meters?
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
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Perimeter of Polygons & Unknown Sides — Easy Worksheet 2
Solve each problem. Shapes are not drawn to scale.