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CPM Course 2 – Chapter 5

Probability and Solving Word Problems

During this chapter students look at part-to-whole relationships and how they connect to percentages. The themes are probability and solving word problems.  During this chapter students will:

  • Find percentages and solve for missing values using equivalent ratios and the linear diagram.
  • Create systematic lists, probability trees and probability tables to determine the probability of compound events.
  • Develop the 5-D Process as a method for solving situational word problems. (Describe/Draw important concepts, Define the terms, Do the math, Decide if correct)

Homework help for this chapter is here

Homework help offers tips, strategies and sometimes solutions for every homework question in this chapter.


  • Parent Guide from CPM for this chapter is here
  • Khan academy videos on probability are here