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6th grade math

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Which numbers use only 2's and 5's as prime factors.
The numbers are 3,4,7,8,12,13,15,16,20,25,28,30,36,40,45,and 48.

  • 6th grade math - ,

    The ones that are divisible by 10, and not 3. That would be 20 and 40. There are others that use JUST 2's (4,8 and 16) or just 5's (25).

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