Assess Yourself

This is incorrect. To find the area of a rectangle, multiply the length times the width, or l x w.

Correct! Length times width equals area!

This is incorrect. To find the area of a rectangle, multiply the length times the width, or l x w.

This is incorrect. Multiply the length times the width, or l x w, to find the area of a rectangle.

This is incorrect. Remember, to find the area of a rectangle, multiply the length times the width, or \({\Large l \times w}\).

This is incorrect. Remember that length times width equals area.

This is incorrect. Area is the number of square units inside a shape, which is why area is always written in square units.

Correct! Remember, to find the area of a rectangle, multiply the length times the width, or \({\Large l \times w}\).

Correct! Area is measured in square units! Area is the number of square units inside a shape, which is why area is always written in square units.

That is incorrect. Area is the number of square units inside a shape, which is why area is always written in square units.

That is incorrect. Area is always written in square units.

That is incorrect. Be sure to use the correct unit when writing the total area.

Correct! The number of tiles in a column tells you the width, and the number of tiles in a row tells you the length.

That is incorrect. 4 is the number of rows, and 5 is the number in each row.

That is incorrect. Look for the rectangle with 4 rows of 5.

That is incorrect. Look for the rectangle with 4 rows and 5 columns.

That is incorrect. Remember, to find the area of a rectangle, multiply the length times the width, or \({\Large l \times w}\).

That is incorrect. Remember, area is \({\Large l \times w}\).

That is incorrect. Multiply to find the area.

That is correct! \({\Large\text{Area} = \text{length} \times \text{width}}\)

Correct! You can calculate the area of the rectangles by multiplying the length by the width: 9 cm \({\times}\) 4 cm \({=}\) 36 square cm.

That is incorrect. You find the area by multiplying the length by the width, 9 cm \({\times}\) 4 cm.

That is incorrect. You need to find the rectangle with the same area as 9 cm \({\times}\) 4 cm \({=}\) 36 square cm.

That is incorrect. Find the rectangle with the same area as 9 cm \({\times}\) 4 cm \({=}\) 36 square cm.

That is incorrect. You can calculate the area of the rectangle by multiplying the length by the width, 8 cm \({\times}\) 1 cm.

That is incorrect. You calculate the area by multiplying the length by the width, 8 cm \({\times}\) 1 cm.

That is incorrect. You can calculate the area of the rectangle by multiplying the length by the width, 8 cm \({\times}\) 1 cm.

Correct! You can calculate the area of the rectangle by multiplying the length by the width, 8 cm \({\times}\) 1 cm.

That is incorrect. The rectangle has an area of 4 in. \({\times}\) 4 in. \({=}\) 16 square in. Find the rectangle with an area of 16 square inches.

That is incorrect. You need to find the rectangle with an area of 16 square inches.

That is incorrect. You are looking for a rectangle that has the same area as 4 in. \({\times}\) 4 in.

That is correct! There are 4 rows with 4 square-inch units in each row, 4 in. \({\times}\) 4 in. \({=}\) 16 square in.

That is incorrect. Area is the number of square units inside a shape, which is why area is always written in square units.

Correct! The area is 10 m \({\times}\) 5 m = 50 square m

That is incorrect. Remember, area is the number of square units inside a shape and is measured in square units.

That is incorrect. Remember, area is l \({\times}\) w.

That is incorrect. This rectangle has an area of 16 square ft., not 24 square ft.

That is incorrect. The original rectangle has an area of 24 square ft., not 25 square ft.

That is incorrect. This rectangle has an area of 6 ft. \({\times}\) 3 ft. \({=}\) 18 square ft., not 24 square ft.

Correct! You can measure the area of the rectangles by multiplying the length by the width. Both have an area of 24 square ft.