Use counters to add –7 + –10.
Question
Use counters to add –7 + –10.
Solution
To add -7 and -10 using counters, follow these steps:
- Start with a blank counter.
- Since we are dealing with negative numbers, we will be removing counters instead of adding them.
- Remove 7 counters for the -7. You now have -7 on your counter.
- Remove 10 more counters for the -10. You now have -17 on your counter.
- So, -7 + -10 equals -17.
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