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Composite Numbers

Directions: Use the digits 1 to 9, at most one time each, to make 5 composite numbers.



What kinds of numbers are often composite?
What single digit numbers are composite?



There are many answers. Here are three possibilities:
8, 35, 96, 74, 12
4, 21, 69, 78, 35
9, 32, 85, 76, 14

Source: Owen Kaplinsky

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  1. Your answers are composite…Aren’t you looking for prime? I am going to put this up with one set of answers to see if my 6th graders see the errors…and to see if they can come up with all prime.

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