Grade 8 · The Number System

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).

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.