School Integer Fun!

School Integer Fun!

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Storyboard Description

Learn how to solve equations adding integers using 2 positives in one equation, 2 negatives in one equation, and 1 positive and 1 negative in one equation.

Storyboard Text

  • What is an integer?
  • An integer is a whole number that can be negative, positive, or zero. An integer can not be a fraction or a decimal.
  • Adding positive integers to positive integers is pretty simple, so thinking on a number line, if you have a positive number such as 2, in order to add another number such as 3, you must move your number on the number line 3 spaces to the right
  • Today is Integer Fun week!
  • In order to add to a negative integer you must work the equation from left to right. For example if your equation was -3+2 on the number line you would start 3 spaces to the left of zero, -3. When you add on a number line you move spaces to the right, so you would move 2 spaces to the right from -3, which results in -1.
  • How to add to a negative integer
  • Then how would you solve an equation with two integers, like -2-3?
  • I know!
  • On a number line -2 would be two spaces to the left of zero. Then because you need to subtract again you would move three spaces to the left on the number line, resulting in -5
  • For example, -2-3: Step 1: ignore the negative signs and add like positive, 5. Step 2: Put a negative sign in front of your positive number, -5. Final result:-2
  • So, a trick to use is to add the two digits as if they were positive. Next you put a negative in front of your answer like it is a positive.
  • Today I learned how to solve equations with two positives, equations with two negatives, and equations with a negative and a positive
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