Online College Courses for Credit

1-6 Irrational Numbers

1-6 Irrational Numbers

Author: Hector Soto

Know that numbers that are not rational are called irrational. Understand informally that every number has a decimal expansion; for rational numbers show that the decimal expansion repeats eventually, and convert a decimal expansion which repeats eventually into a rational number.

See More

Try Our College Algebra Course. For FREE.

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to many different colleges and universities.*

Begin Free Trial
No credit card required

29 Sophia partners guarantee credit transfer.

312 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 27 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.



Please watch both videos before answering questions.

Irrational Numbers

Introduction to Irrational Numbers (what are they?)

Source: MyWhyU

The Most Perfect Estimate of an Irrational Number

One of the many methods of estimating (approximating) the value of an irrational number.

Source: Scott Malone