Discussion: Keynote Part 1

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posted by: Andreas Stylianides on May 14, 2003 at 3:22PM
subject: What this student would do next...
I think there are at least two possibilities other than writing 1-1-9.
One would be to write 100 20 + 1. The other would be to keep the
positive digits (taking account of the place value) and subtract the
negative (again, taking account of the place value), that is, 101 20.
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