4.02 Substituting into algebraic expressions

6.EE.2c

Write, read, and evaluate expressions in which letters stand for numbers. c. Evaluate expressions at specific values for their variables. Include expressions that arise from formulas in real-world problems. Perform arithmetic operations, including those involving whole-number exponents, in the conventional order when there are no parentheses to specify a particular order (Order of Operations). For example, use the formulas V=s^3 and A=6s^2 to find the volume and surface area of a cube with sides of length s=1/2. For example, use the formulas V=s^3 and A=6s^2 to find the volume and surface area of a cube with sides of length s=1/2