3rd Grade Perimeter Practice

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

The unit of measurement for perimeter can be centimeters (cm), meters (m), or inches (in), depending on the size of the shape.

Front

How do you find the perimeter of a rectangle?

Back

To find the perimeter of a rectangle, add the lengths of all four sides or use the formula P = 2(length + width).

Front

What is the perimeter of a square with each side measuring 5cm?

Back

The perimeter is 20cm (P = 5cm + 5cm + 5cm + 5cm).

Front

If a triangle has sides measuring 3cm, 4cm, and 5cm, what is its perimeter?

Back

The perimeter is 12cm (3cm + 4cm + 5cm).

Front

What is the formula for the perimeter of a square?

Back

The formula for the perimeter of a square is P = 4 × side length.

Front

What is the perimeter of a shape with sides measuring 6cm, 7cm, and 8cm?

Back

The perimeter is 21cm (6cm + 7cm + 8cm).

Front

What does 'cm' stand for in measurements?

Back

'cm' stands for centimeters, a unit of length.

Front

What is the perimeter of a rectangle with a length of 10cm and a width of 4cm?

Back

The perimeter is 28cm (P = 2(10cm + 4cm)).

Front

If a shape has a perimeter of 30cm and is a square, what is the length of one side?

Back

The length of one side is 7.5cm (30cm ÷ 4).