3rd grade Area and Perimeter

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 calculate the area of a rectangle?

Back

Multiply the length by the width (Area = Length x Width).

Front

How do you calculate the perimeter of a rectangle?

Back

Add the lengths of all four sides (Perimeter = 2 x Length + 2 x Width).

Front

What units are used to measure area?

Back

Area is measured in square units, such as square centimeters (cm²) or square meters (m²).

Front

What is the area of a rectangle with a length of 5 cm and a width of 4 cm?

Back

20 square centimeters (5 cm x 4 cm = 20 cm²).

Front

What is the perimeter of a rectangle with a length of 5 cm and a width of 4 cm?

Back

18 centimeters (2 x 5 cm + 2 x 4 cm = 18 cm).

Front

True or False: Area is the measurement of the outside of a shape.

Back

False. Area measures the inside space of a shape.

Front

What is the area of a square with a side length of 3 cm?

Back

9 square centimeters (3 cm x 3 cm = 9 cm²).

Front

What is the perimeter of a square with a side length of 3 cm?

Back

12 centimeters (4 x 3 cm = 12 cm).