3rd Grade Perimeter Practice

Front

What is Perimeter?

Back

Perimeter is the total distance around the outside of a shape.

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 5 cm?

Back

P = 5 cm + 5 cm + 5 cm + 5 cm = 20 cm.

Front

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

Back

P = 3 cm + 4 cm + 5 cm = 12 cm.

Front

What do you do to find the Perimeter of a shape?

Back

You add the lengths of all the sides together.

Front

What is the Perimeter of a polygon with sides measuring 6 in, 7 in, and 8 in?

Back

P = 6 in + 7 in + 8 in = 21 in.

Front

What is the formula for the Perimeter of a rectangle?

Back

P = 2(length + width).

Front

If a shape has a Perimeter of 30 cm and one side is 10 cm, what is the total length of the other three sides?

Back

20 cm (30 cm - 10 cm = 20 cm).

Front

What is the Perimeter of a shape with sides measuring 4 cm, 4 cm, and 4 cm?

Back

P = 4 cm + 4 cm + 4 cm = 12 cm.

Front

Do you multiply or add to find the Perimeter?

Back

You add the lengths of the sides.