Arithmetic Grade Three

Lesson One hundred seventy: Area


Area is the amount of space taken up by a shape. To find the area of a rectangle you multiply the width by the height. Consider this rectangle:

This rectangle has a height of 13 units and a width of 14 units.


   AREA = 13 x 14 = 182 square units

Remember units can be inches, feet, yards, meters, or any other unit of length. We use the term units when the actual unit is left unspecified.

To help you to visualize this a little better consider this example:

As you can see this square contains 64 little squares. Each of these squares is a square unit. Area is measured in square units. This square has an area of 64 square units.


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