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Ch 4: High School Algebra: Real Numbers

About This Chapter

Watch online video lessons and learn about the different aspects of real numbers. Take the self-assessment quizzes to test your knowledge of the material.

Real Numbers - Chapter Summary and Learning Objectives

Natural numbers, whole numbers, integers, rational numbers and irrational numbers are all considered real numbers. In these lessons, our instructors will show you how to define the different types of such numbers. Through watching our video lessons, you'll also find out how real numbers are used and identified. By the time you complete this chapter, you should understand how to:

  • Graph rational numbers on the number line
  • Use < or > to determine which number is greater
  • Write an inequality that has the same meaning as another inequality
  • Judge whether an inequality is considered true or false
  • Find a real number's absolute value
  • Show how fraction notations for rational numbers can be converted to decimal notations

Video Objective
What are the Different Types of Numbers? Learn about which types of numbers there are: natural, whole, integers, rational, irrational and real.
Graphing Rational Numbers Demonstrate how to graph rational numbers on the number line.
Notation for Rational Numbers Explain how to convert fraction notation for a rational number to decimal notation.
The Order of Real Numbers Determine which of two real numbers is greater and indicate this using < or >. Given an inequality like a > b, write another inequality with the same meaning. Determine whether an inequality like -3 < or = 5 is true or false.
The Absolute Value of a Real Number Explain how to find the absolute value of a real number.

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