EUREKA MATH \( { }^{2} \) Name Find the total number of unit squares in each array. Use the array to label the side lengths of the area model. Write an equation describing the area of the area model.
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Throughout history, arrays have been a crucial tool in mathematics, dating back to ancient civilizations like the Egyptians, who used them for tasks such as land measuring and trade calculations. These early practitioners recognized that visualizing numbers in a grid helps simplify multiplication and area calculations, laying the groundwork for future developments in mathematics. In the real world, arrays are everywhere! Think about packaging, like chocolates in a box or seats in a theater—arrays help us count and organize. When determining the total number of unit squares in a rectangular array, simply multiply the number of rows by the number of columns. This practical approach not only simplifies counting but is essential in fields like architecture, computer graphics, and even logistics!
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