High School · The Real Number System

CCSS.MATH.CONTENT.HSN.RN.B.3

Explain why the sum or product of two rational numbers is rational; that the sum of a rational number and an irrational number is irrational; and that the product of a nonzero rational number and an irrational number is irrational.

Read this standard on the official Common Core site

Lessons that teach this standard

• Rational and Irrational Numbers

  What makes a number irrational, why every rational number has a terminating or repeating decimal, and how to place an irrational number on a number line.