3. Adding Rational Numbers
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When calculating the sum of two numbers with the same sign, we add their absolute values.
- 5
We will check our solution, just to be sure. To do so, we will represent the situation on the number line.
Looking at the diagram, we can see that the top arrow ends at - 5. This means that the result of adding - 1 to - 4 points is equal to - 5 points. Therefore, our answer is correct.