Use counters to add –7 + –2.
Solution
To add -7 and -2 using counters, follow these steps:
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Start by representing -7 on your counter. Since it's a negative number, you would have 7 negative counters.
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Next, represent -2 on your counter. You would add 2 more negative counters.
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Now, combine all the counters. You have a total of 9 negative counters.
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Therefore, -7 + -2 equals -9.
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