Factors and Multiples

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What are factors?

Back

Factors are numbers that can be multiplied together to get another number. For example, the factors of 6 are 1, 2, 3, and 6.

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What are multiples?

Back

Multiples are the result of multiplying a number by an integer. For example, the first five multiples of 3 are 3, 6, 9, 12, and 15.

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What is a prime number?

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A prime number is a number greater than 1 that has no positive divisors other than 1 and itself. For example, 2, 3, 5, and 7 are prime numbers.

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What is a composite number?

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A composite number is a number that has more than two positive divisors. For example, 4, 6, and 8 are composite numbers.

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What is the number that is neither prime nor composite?

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The number 1 is neither prime nor composite.

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How do you find the factors of a number?

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To find the factors of a number, list all the numbers that divide evenly into it. For example, the factors of 12 are 1, 2, 3, 4, 6, and 12.

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How do you find the first five multiples of a number?

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To find the first five multiples of a number, multiply the number by 1, 2, 3, 4, and 5. For example, the first five multiples of 4 are 4, 8, 12, 16, and 20.

Front

What is the greatest common factor (GCF)?

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The GCF is the largest number that can divide two or more numbers without leaving a remainder. For example, the GCF of 6 and 15 is 3.

Front

What is the least common multiple (LCM)?

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The LCM is the smallest number that is a multiple of two or more numbers. For example, the LCM of 3 and 4 is 12.

Front

What is an example of a prime number?

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An example of a prime number is 17.