Sunday, January 24, 2016

Integer Modeling

Equation: -4 x -2

This equation is read: Take away 2 groups of negative 4, or take away 4 groups of negative 2.

STEPS:

You need to take away 4 groups of negative 2, but you don't have it. Thus, you need to make zero pairs. Add 8 of the negatives, and 8 of the positives. The sum of the zero pairs are equal to zero, so it has no effect on the equation. Now, using the zero pairs, you can take away 4 groups of negative 2. Take away the negatives we have added in the zero pairs, and you will be left with 8 positives. Therefore, the answer to this question is 8.

Make the zero pairs:                        Take away 4 groups of negative 2:



Theory: A negative multiplied by a negative equals a positive.
Answer: -4 x -2 = 8

4 comments:

  1. I like how you had two pictures to show each step.

    ReplyDelete
  2. I like how you added the photos of the zero pairs and the take away 4 groups of negative 2

    ReplyDelete
  3. I love how your examples and explanation are both clear and complete! No missing steps, and no confusing bits. Great job :)

    ReplyDelete
  4. You did a great job of describing how to do the individual steps, especially the zero pairs.

    ReplyDelete