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The Counting and cardinality Number Line above is aligned, either partially or wholly, with standard 4OA04 taken from the CCSM (Common Core Standards For Mathematics)  see the extract below). The resources below are similarly aligned.
Find all factor pairs for a whole number in the range 1 to 100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1 to 100 is a multiple of a given onedigit number. Determine whether a given whole number in the range 1 to 100 is prime or composite.