Factors and Multiples

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What is a factor?

Back

A factor is a whole number that can be divided evenly into another number. For example, factors of 10 are 1, 2, 5, and 10.

Tags

CCSS.4.OA.B.4

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What is a multiple?

Back

A multiple is the result of multiplying a number by an integer. For example, multiples of 3 include 3, 6, 9, 12, 15, etc.

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What are prime numbers?

Back

Prime numbers are numbers greater than 1 that have no divisors other than 1 and themselves. Examples include 2, 3, 5, 7, and 11.

Tags

CCSS.4.OA.B.4

Front

What are composite numbers?

Back

Composite numbers are numbers that have more than two factors. For example, 4, 6, 8, and 9 are composite numbers.

Tags

CCSS.4.OA.B.4

Front

What is the prime factorization of a number?

Back

The prime factorization of a number is expressing it as a product of its prime factors. For example, the prime factorization of 12 is 2 x 2 x 3.

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What are factor pairs?

Back

Factor pairs are two numbers that, when multiplied together, equal a given number. For example, the factor pairs of 20 are (1, 20), (2, 10), and (4, 5).

Tags

CCSS.4.OA.B.4

Front

How do you find the factors of a number?

Back

To find the factors of a number, list all the whole numbers that can divide that number without leaving a remainder.

Tags

CCSS.4.OA.B.4

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) of two or more numbers is the smallest number that is a multiple of each of the numbers.

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What is the greatest common factor (GCF)?

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The greatest common factor (GCF) of two or more numbers is the largest number that divides each of the numbers without leaving a remainder.

Front

Is 1 a prime number?

Back

No, 1 is not considered a prime number because it only has one factor, which is itself.

Tags

CCSS.4.OA.B.4