Probability of Disjoint and Overlapping Events – Algebra 2 Resource

Probability of Disjoint and Overlapping Events – Algebra 2 Resource

Bring probability to life in your Algebra 2 classroom with this comprehensive, no-prep worksheet on Disjoint and Overlapping Events. This resource is designed to give students plenty of practice applying the Addition Rule and Conditional Probability, while reinforcing key vocabulary and concepts from Chapter 10 of most Algebra 2 curriculums.

This resource includes:

• A warm-up section with definitions of essential terms (disjoint events, overlapping events, addition rule, conditional probability, sample space) plus pre-requisite review questions to activate prior knowledge.
• Six structured practice sections (Parts A–F), each with 10 problems (60 total), covering:
  • Identifying disjoint vs. overlapping events
  • Applying the Addition Rule (P(A or B))
  • Finding conditional probability (P(A|B))
  • Real-world word problems
  • Multi-step probability problems
  • Mixed review of all concepts
• A complete answer key for quick grading and easy student feedback.
• 100% editable format so you can customize the problems, adjust difficulty, or add extensions to meet the needs of your students.

Why Teachers Love This Resource:

• Aligned with Common Core Standards:
  • HSS.CP.B.6 – Find the conditional probability of A given B as the fraction of B’s outcomes that also belong to A, and interpret the answer in terms of the model.
  • HSS.CP.B.7 – Apply the Addition Rule, P(A or B)=P(A)+P(B)−P(A and B), and interpret the answer in terms of the model.

• Provides 90–120 minutes of practice — perfect for classwork, homework, test prep, or sub plans.
• Clear, consistent formatting makes it easy for students to follow.
• Great for differentiation: use full sections, mix-and-match, or assign specific problem sets.

What Teachers Are Looking For:

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Terms of Use: This resource is licensed for use by one teacher in one classroom. Please do not share, distribute, or post this resource online. If another teacher would like to use it, please direct them to purchase their own copy. Thank you for supporting Minute Math!