Multiplying and Dividing with Zero

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
2228 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, we explore multiplying and dividing with the number zero. Any number multiplied by zero is zero and any number divided by zero is undefined. However, if zero is divided by any non-zero number, the answer is zero. We also learn about the algebraic definition of division and the lollipop method to help remember the rules. Whether it's algebra or basic arithmetic, knowing how to handle zero is essential in math.

Lesson Description:

Learn how to multiply and divide with zero and what makes zero special.

More free YouTube videos by Julie Harland are organized at

Questions answered by this video:
  • What is 0 * -1?
  • What does n*0 equal?
  • How do you multiply and divide with zero?
  • What is so special about zero when multiplying and dividing?
  • What is 7 times 0?
  • What is 0 * 3?
  • What is 1/2 * 0?
  • What is -9 * 0?
  • What is 0 * 0?
  • What is 0 * square root of 2?
  • Why is anything times 0 equal to 0?
  • What is the algebraic definition of division?
  • What does 6/0 equal?
  • Why can't you divide by 0?
  • Why is any number divided by zero undefined?
  • What is 0/0?
  • Why is 0/0 undefined?
  • What is 0/a?
  • Why does 0 divided by a number equal 0?
  • Why does 0/1 = 0?
  • How can you remember that 0/1 = 0 and 1/0 is undefined?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson is a good introduction to the number zero. It shows many different example problems involving multiplying and dividing by zero. This is an excellent place to start when first learning about multiplying and dividing by 0.