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This is a unit for teachers about the set of natural numbers 1 to 99. More than 100 questions, activities, and conjectures about natural numbers 1 to 99. Odd numbers, even numbers, prime numbers, composite numbers, factors, sums of factors, and so on, Plus uphill numbers, flat numbers, downhill numbers, palprimes, and emirps.This is the third unit in a set of three units. The other two units are the reference units: Natural Numbers 1 to 99 Natural Numbers 1 to 99 -Tables
This resource was reviewed using the Curriki Review rubric and received an overall Curriki Review System rating of 3, as of 2008-12-12.
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