4. Shade the rectangle to break it into two smaller rectangles. Then complete the equations to find the total area of the large rectangle. Each \( \square \) represents 1 square unit.

To shade the rectangle and break it into two smaller rectangles, you could draw a vertical or horizontal line across the rectangle. For instance, if you draw a vertical line, you can separate the larger rectangle into two smaller rectangles, each having a defined base and height. To find the total area of the large rectangle, you can add up the areas of the two smaller rectangles. If rectangle A has a length of \( l_1 \) and a width of \( w_1 \), its area would be \( A_1 = l_1 \times w_1 \). For rectangle B, with dimensions \( l_2 \) and \( w_2 \), its area would be \( A_2 = l_2 \times w_2 \). The total area is then calculated as \( A_{\text{total}} = A_1 + A_2 = (l_1 \times w_1) + (l_2 \times w_2) \). Voilà! Total area achieved!