Standards

CCSS.Math.Content.8.NS.A

Know that there are numbers that are not rational, and approximate them by rational numbers.

The Number System

Common Core State Standards (CCSS) Initiative: Mathematics Standards

CCSS.Math.Content.8.NS.A.2 Use rational approximations of irrational numbers to compare the size of irrational numbers, locate them approximately on a number line diagram, and estimate the value of expressions (e.g., π²).