AQR.4.B
Use the Addition Rule, P(A or B)= P.A+ P.B- P(A and B), in mathematical and real-world problems.

1-on-1 AI tutoring aligned to AQR.4.B. Instant help for students, real-time insights for teachers.
Used in classrooms by 100,000+ students at Baltimore County, Plano ISD, Deer Valley USD, KIPP, and districts nationwide.
Free for teachers, forever →