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Adding And Subtracting Signed Numbers
- To add numbers that have the same sign, just add the numbers and bring down the sign
- To add numbers that have different signs, find the difference between the two and put the sign of the larger number as your answer
- When there is no + or - sign in front of a number, it is assumed to be positive
- To subtract signed numbers, change the sign of the second number and apply the two rules of addition
- Notice that the sign on the top never changes
- Notice that the sign on the top never changes
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