If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

STANDARDS

 > 

US-NY

Math

New York Math

Algebra I: Number and Quantity - The Real Number System

Use properties of rational and irrational numbers.

AI-N.RN.3.b

Mostly covered
Categorize the sum or product of rational or irrational numbers: The sum and product of two rational numbers is rational; The sum of a rational number and an irrational number is irrational; The product of a nonzero rational number and an irrational number is irrational; The sum and product of two irrational numbers could be either rational or irrational.