Jim says that a 2 1 2 inch by 3 1 4 inch rectangle has a section that is 2 inches × 3 inches and a section that is 1 2 inch × 1 4 inch. That means the total area is just the sum of these two smaller areas, or 6 1 8 in². Why is Jim

incorrect? Use an area model to explain your thinking. Then, give the correct area of the rectangle.