Perimeter - 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 or use the formula: P = 2(length + width).

Front

What is the perimeter of a square with each side measuring 4 cm?

Back

16 cm (4 cm + 4 cm + 4 cm + 4 cm = 16 cm).

Front

If a rectangle has a length of 5 cm and a width of 3 cm, what is its perimeter?

Back

16 cm (5 cm + 3 cm + 5 cm + 3 cm = 16 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 triangle with sides measuring 3 cm, 4 cm, and 5 cm?

Back

12 cm (3 cm + 4 cm + 5 cm = 12 cm).

Front

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

Back

5 cm (20 cm ÷ 4 = 5 cm).

Front

What is the perimeter of a rectangle with a length of 10 m and a width of 2 m?

Back

24 m (10 m + 2 m + 10 m + 2 m = 24 m).

Front

Do you multiply or add when you find the perimeter?

Back

Add.

Front

If a garden has a perimeter of 40 feet and two sides are 10 feet each, what is the length of the other two sides?

Back

10 feet each (40 feet - 10 feet - 10 feet = 20 feet; divide by 2).