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Prime and Composite Numbers. Prime and Composite Numbers Divisibility Rules. Prime and Composite Numbers. Definitions Prime Number ~ is divisible by only the numbers 1 and itself. Composite Numbers ~ Numbers that are divisible by more than two numbers.
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Prime and Composite Numbers Definitions • Prime Number ~ is divisible by only the numbers 1 and itself. • Composite Numbers ~ Numbers that are divisible by more than two numbers. • Divisible ~ Can be divided by a number without leaving a remainder. (factors)
Example A Prime or Composite? 45 Divisible by: 1, 3, 5, 9, 15, 45 Composite
Example B Prime or Composite? 13 Divisible by: _______________ Answer?
Example C Prime or Composite? 49 Divisible by: _________________ Answer?
Example D Prime or Composite? 19 Divisible By: __________________