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14 Cards in this Set
- Front
- Back
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What is an even number?
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An even number is a number measured by 2.
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What is an odd number?
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An odd number is a number that is NOT measured by 2.
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What is a prime number?
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A prime number is a number greater than 1 that is measured only by 1 and itself.
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What is a composite number?
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A composite number is a number that is measured by more than two numbers.
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What is a perfect number?
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A perfect number is a number that is equal to the sum of its aliquot parts.
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What are the first 10 even numbers?
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2, 4, 6, 8, 10, 12, 14, 16, 18, 20
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What are the first 10 odd numbers?
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1, 3, 5, 7, 9, 11, 13, 15, 17, 19
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What are the first 5 prime numbers?
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2, 3, 5, 7, 11
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What are the first 6 composite numbers?
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4, 6, 8, 9, 10, and 12
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What is an example of a perfect number?
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The easiest example is the perfect number 6. The aliquot parts of 6 are 1, 2, and 3, and 1 + 2 + 3 = 6.
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A number is prime if and only if it has only one aliquot part.
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True
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An even number greater than 2 is a composite number.
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True
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The sum of even numbers is an even number.
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True
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The sum of two odd numbers is even.
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True
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