Negative numbers and opposite numbers

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Intros
Lessons
  1. Introduction to Negative Numbers and Opposite Numbers
  2. What is a negative number?
  3. What is an opposite number?
  4. How to find an opposite number algebraically?
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Examples
Lessons
  1. Understanding Negative Numbers
    For each of the following pair of integers, which integer has a greater value?
    1. −8-8 and −2-2
    2. 00 and −3-3
  2. Analyzing Opposite Numbers
    Fill in the following table:

    1. Scenario

      Opposite of the Scenario

      Description

      Number

      Description

      Number

      Billy lost $5

    2. Scenario

      Opposite of the Scenario

      Description

      Number

      Description

      Number

      Sylvia's flight was delayed by 2 hours.

    3. Scenario

      Opposite of the Scenario

      Description

      Number

      Description

      Number

      Tim bought 3 cupcakes.

  3. Solving Opposite Numbers Graphically and Algebraically
    Find the opposite of the given numbers:
    i. Graphically (using a number line)
    ii. Algebraically
    1. 7 7
    2. −4-4
    3. 0 0
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Practice
Topic Notes
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• Negative numbers: any numbers to the left of zero on a number line.
• Numbers increase in value as we move up/right on a number line.
• Opposite numbers: numbers with the same distance from 0, but on the opposite side of a number line.
• To find an opposite number, we attach a negative sign to the given number.
• Two LIKE signs give a positive sign.
• Two UNLIKE signs give a negative sign.