4.1 Polynomials 4.2 Adding Polynomials 4.3 Subtracting Polynomials 4.4 Problem Solving: Use a Diagram 4.5 Multiplying Monomials by Monomials 4.6 Problem Solving: Solve a Simpler Problem 4.7 Dividing Monomials by Monmials 4.8 Problem Solving: Sequence the Operations