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Posted by B.B. on Thursday, July 2, 2009 at 9:42am.

Here is my question: Use counters to model the difference -2-5. Here is my answer: <-- -5-- -4 -- -3 -- -2-- -1-- 0---1--2--3--4--5---> Start at -2 and count backwards 5 points and it will = -3. Is this correct? Thanks.

No. If you start at -2 and go backwards 5 points, you won't end up at -3. Please try again.

I meant to say -7. Is this correct? Thanks.

Yes. You'd end up at -7.

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