Integer Rules: Working with Positive and Negative Numbers
Integer Rules: Working with Positive and Negative Numbers
For Multiplication and Division
When the signs are the same, the answer is ‘Positive’
Ex: (+) (+) = (+) (4) (3) = 12
(-) (-) = (+) (-4) (-3) = 12
Ex: [pic] [pic] [pic] [pic]
When the signs are different, the answer is ‘Negative’
Ex: (+) (-) = (-) (4) (-3) = -12
(-) (+) = (-) (-4) (3) = -12
Ex: [pic] [pic] [pic] [pic]
| | Integer Rules for working with Positive and Negative Numbers
First Side:
Second Side:
|Integer Rules: Working with Positive and Negative Numbers |
|For Addition: |
|When the signs are the same, keep them the same. |
|Ex: (+) + (+) = (+) (-) + (-) = (-) |
|4 + 7 = 11 -4 + (-7) = -11 |
|When the signs are different, find the difference and use the sign of the number that is farthest|
|from zero. |
|Ex: 4 + (-7) = -3 -4 + 7 = 3 |
| |
|For Subtraction: |
|Remember to ‘keep-change-change’, then follow the addition rules. |
|Ex: 4 – (-7) = 4 + 7 = 11 -4 –(-7) = -4 + 7 = 3 |
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