Confused about the real number system?

Below you'll find a simple video showing how to solve a problem involving the real number system.  If you have questions and I'm online, you can also chat with a live algebra tutor.  In the gray box (where it says "Chat with us"), type (or copy and paste) the question with which you need help. 

This math help chat room is perfect for word problems.

sample problem about the real number system

The following video solves this multiple choice question:

Which of the following is true regarding number sets?

  • All integers are whole numbers.
  • All irrational numbers are real numbers.
  • All real numbers are integers.
  • All rational numbers are natural numbers.

What if it says "Leave a message," not "Chat with us"?

If the chat box says "Leave a message," that means I'm offline.  Click on it and send me the text of the problem you need help with.  Please mention what grade you're in (for example, 9th) and what math class you're in (for example, algebra 1).  It will ask you for your name and e-mail address.  I value your privacy and will not share or sell your e-mail address.

Within 24 hours, I'll e-mail you the link to a video showing you how to solve the problem.

Is this a good resource for taking tests?

No, this website is not appropriate for taking quizzes, tests, or exams.  That would be cheating.  We prepare for them by studying and practicing.  Use this website for homework, practice problems, or sample problems.


The real number system is pretty cool once you get the hang of it.  I hope you've found this page helpful!