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For more information, please see full course syllabus of GRE/ACT/PSAT Math
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Lecture Comments (4)

0 answers

Post by Tempest Thornton on July 15, 2015

Hello! This lesson is not loading completely.  I'm getting a "Network error! [Error #2032]" message in the bottom corner of the black screen.  Is there any way that I can access this lesson through a link?

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Post by Kavi Rude on September 30, 2014

Hi - the video does not seem to progress beyond the first few seconds of 'The Basics: Signed numbers'. The player cuts out and loops back to the introduction.

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Post by Gurpreet Atwal on February 7, 2014

Why flash player not working this site

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Post by abc123 abc123 on June 24, 2013

your examples are too difficult to understand. can you explain in simpler exapmles?

Signed Numbers

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • The Basics: Signed Numbers 0:13
    • How to Think of Negative Numbers
    • Signed Numbers on the Number Line
  • Signed Numbers: Addition and Subtraction 3:07
  • Subtracting a Negative 8:35
    • The Loss of a Negative is the Addition of a Positive
    • Flip the sign!
  • Addition and Subtraction Examples 12:19
  • Signed Numbers: Multiplication and Division 13:45
    • Quick Rules
  • Multiplication and Division Examples 17:02