| Problem: |
|
3 + +5 |
|
3 + (-5) |
|
3 - (+5) |
|
3 - -5 |
|
-3 + (-5) |
|
-3 - -5 |
| If you see two signs next to each other, change them to a single sign:++ changes to ++- changes to --+ changes to - -- changes to + |
|
3 + 5 |
|
3 - 5 |
|
3 - 5 |
|
3 + 5 |
|
-3 - 5 |
|
-3 + 5 |
| Now there are just two signs. (For example, 3-5 is really +3 - 5)If the 2 signs are different, the answer has the sign of the larger number.(5 in this case, since 5 is larger than 3.)If they're the same, the answer also has the same sign. |
|
+ |
|
- |
|
- |
|
+ |
|
- |
|
+ |
| If the signs are different, subtract the two numbers.If they're the same, add. |
|
8 |
|
2 |
|
2 |
|
8 |
|
8 |
|
2 |
| Final Answer: |
|
8 |
|
-2 |
|
-2 |
|
8 |
|
-8 |
|
2 |
