IN.4.3. Algebra and Functions
Students use and interpret variables, mathematical symbols, and properties to write and simplify numerical expressions and sentences. They understand relationships among the operations of addition, subtraction, multiplication, and division.
4.3.2 Use and interpret formulas to answer questions about quantities and their relationships.
Students understand perimeter and area, as well as measuring volume, capacity, time, and money.
4.5.3 Know and use formulas for finding the perimeters of rectangles and squares.
4.5.4 Know and use formulas for finding the areas of rectangles and squares.
4.5.5 Estimate and calculate the area of rectangular shapes by using appropriate units, such as square centimeter (cm^2), square meter (m^2), square inch (in^2), or square yard (yd^2).