-25 + -55 = -80
Negative plus negative equals
A negative plus negative sign is equal to a negative sign
For example, negative 25 plus negative 55 is equal to negative 80
Addition rules for positive and negative numbers
1. Two same signs – (Add the numbers)
25 + 55 = 80
-25 + -55 = -80
Summary
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2. Two different signs – (Subtract the numbers)
For example:
25 + -55 = -30
-25 + 55 = 30
Summary
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+ |
– |
– |
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– |
+ |
It is important to be consistent with the signs when adding or subtracting integers.
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NOTE |
| A number with no negative sign at the front is always a positive number |
Negative plus Negative Calculator
Use the calculator below to add two negative numbers