3rd Grade Perimeter

Front

What is the perimeter?

Back

The perimeter is the total distance around the outside of a shape.

Front

What is the unit of measurement for perimeter?

Back

Common units for measuring perimeter include centimeters (cm), meters (m), feet (ft), and inches (in).

Front

How do you find the perimeter of a rectangle?

Back

Add the lengths of all four sides: P = 2(length + width).

Front

What is the perimeter of a square with each side measuring 8cm?

Back

P = 8 + 8 + 8 + 8 = 32cm.

Front

If a triangle has sides measuring 5cm, 6cm, and 7cm, what is its perimeter?

Back

P = 5 + 6 + 7 = 18cm.

Front

What is the formula for the perimeter of a rectangle?

Back

P = 2(length + width).

Front

What is the perimeter of a shape with sides measuring 4cm, 5cm, and 6cm?

Back

P = 4 + 5 + 6 = 15cm.

Front

If a square has a perimeter of 20cm, what is the length of one side?

Back

Each side is 20cm ÷ 4 = 5cm.

Front

What is the perimeter of a shape with four equal sides measuring 10m?

Back

P = 10 + 10 + 10 + 10 = 40m.

Front

What is the perimeter of a rectangle with a length of 12cm and a width of 5cm?

Back

P = 2(12 + 5) = 34cm.