Perimeter Introduction for 3rd Grade

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.

Front

What is the formula for the perimeter of a rectangle?

Back

Perimeter = 2(length + width)

Front

If a square has a side length of 4 units, what is its perimeter?

Back

16 units (4 units x 4 sides).

Front

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

Back

Add the lengths of all the sides.

Front

What is the perimeter of a triangle with sides measuring 3, 4, and 5 units?

Back

12 units (3 + 4 + 5).

Front

If a shape has a perimeter of 20 units, what does that mean?

Back

The total length around the shape is 20 units.

Front

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

Back

20 cm (5 cm x 4 sides).

Front

How can you check your perimeter calculation?

Back

Re-add the lengths of all sides to ensure accuracy.

Front

What is the perimeter of a rectangle with a length of 6 units and a width of 3 units?

Back

18 units (2(6 + 3)).