Area of Rectangle Using Arrays

Jaheim says you can create three rectangles with different side lengths using 12 unit squares. Draw three different rectangles that have an area of 12.

JBC Elementary School uses the design below for their swimming pool. Shapes A, B, and C are rectangles.

What multiplication sentence would be used to find the area of rectangle C?

10 meters x ______ meters = 60 square meters

Henry drew the rectangle below using 12 squares. Which of the following is another way to represent the rectangle using 12 squares?

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Can one of the arrays be used to correctly measure the area of the piece of paper? If so, whose array would you use?

• Yes, Jean’s array can measure the area of the paper.

• Yes, Harold’s array can measure the area of the paper.

• Yes, both arrays can measure the area of the paper.

• No, neither array can measure the area of the paper.

Using square units, what is the area of the piece of paper?

_____ square units

An --- is a method of finding a product that uses a rectangle and partial products.

• equation

• array

• area model

• expression

Whose array can be used to correctly measure the area of a piece of paper?

• Jean's array

• Harold's array

• Both of their arrays

• Neither of their arrays

Calculate the area of the shape below.

• 16 cm²

• 24 cm²

• 18 cm²

• 30 cm²

What is the product of this area model?

• 1,248

• 624

• 2

What number goes in the green rectangle?

• 35

• 14

• 45