Area and Perimeter 3rd Grade

Front

What is area?

Back

Area is the amount of space inside a shape, measured in square units.

Front

What is perimeter?

Back

Perimeter is the distance around a shape, calculated by adding the lengths of all its sides.

Front

How do you find the area of a rectangle?

Back

Multiply the width by the length (Area = width × length).

Front

How do you find the perimeter of a rectangle?

Back

Add the lengths of all four sides (Perimeter = 2 × (width + length)).

Front

What units are used to measure area?

Back

Area is measured in square units, such as cm² or in².

Front

What units are used to measure perimeter?

Back

Perimeter is measured in linear units, such as centimeters (cm) or inches (in).

Front

If a rectangle has a width of 5 cm and a length of 10 cm, what is its area?

Back

50 cm² (Area = 5 cm × 10 cm).

Front

If a rectangle has a width of 5 cm and a length of 10 cm, what is its perimeter?

Back

30 cm (Perimeter = 2 × (5 cm + 10 cm)).

Front

What is the area of a square with a side length of 4 cm?

Back

16 cm² (Area = side × side = 4 cm × 4 cm).

Front

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

Back

16 cm (Perimeter = 4 × side = 4 × 4 cm).