Area of Rectangle Using Arrays

Matthew built a rectangular garden to grow food for his family. His garden was 3 feet wide by 7 feet long. What was the area of his garden?

• 21 sq. ft.

• 22 sq. ft.

• 15 sq. ft.

• 18 sq. ft.

Felipe started placing square tiles to form a rectangle. He continued to place the square tiles until he covered the entire rectangle. What is the area of the rectangle in square units.

• 11 sq. units

• 22 sq. units

• 28 sq. units

• 27 sq. units

Find the area of the rectangle in square centimeters.

• 17 sq. cm.

• 40 sq. cm.

• 26 sq. cm.

• 60 sq. cm.

• A

• B

• C

• D

Select the correct number model with the rectangular array

• 4 + 4 + 4 + 4 = 20

• 4 x 4 = 16

• 16 + 0 = 16

• 16 x 1 = 16

Marcia decided to tile her kitchen floor. What is the area of Marcia's kitchen floor?

• 5 sq. units

• 20 sq. units

• 15 sq. units

• 10 sq. units

The model represents the length and the with of a rectangular floor. What is the area of the floor in square feet?

• 45 square feet, because 5 x 9 = 45

• 54 square feet, because 6 x 9 = 54

• 48 square feet, because 6 x 8 = 48

• 28 square feet, because 9 + 5 + 9 + 5 = 28

A model of a rectangular bulletin board is shown. The top row has been divided into squares of equal size. The rest of the model will be divided into squares of the same size. What is the area of square units represented by this model?

• 8 sq. units

• 15 sq. units

• 12 sq. units

• 16 sq. units

What is the area of this rectangle in square units?

• 2 square units

• 4 square units

• 6 square units

• 8 square units

Sarah Says the rectangle on the left, has the same area as the sum of the two on the right. Pam says they do not have the same areas. Who is correct? Explain using numbers, pictures, and words.

• Sarah is right, they have the same areas.

• Pam is right, they do not have the same areas.