Factoring

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What is Factoring?

Back

Factoring is the process of breaking down a number or an expression into its component parts, called factors, that when multiplied together give the original number or expression.

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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 12 are 1, 2, 3, 4, 6, and 12.

Tags

CCSS.4.OA.B.4

Front

What is a Prime Number?

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

Tags

CCSS.4.OA.B.4

Front

What is a Composite Number?

Back

A composite number is a natural number greater than 1 that is not prime, meaning it has more than two factors. For example, 4, 6, and 8 are composite numbers.

Tags

CCSS.4.OA.B.4

Front

What is the Greatest Common Factor (GCF)?

Back

The GCF of two or more numbers is the largest number that divides all of them without leaving a remainder. For example, the GCF of 8 and 12 is 4.

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What is the Least Common Multiple (LCM)?

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The LCM of two or more numbers is the smallest number that is a multiple of all of them. For example, the LCM of 4 and 5 is 20.

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How do you find the GCF of two numbers?

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To find the GCF, list the factors of each number and identify the largest factor they have in common.

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How do you find the LCM of two numbers?

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To find the LCM, list the multiples of each number and identify the smallest multiple they have in common.

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What are the factors of 25?

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The factors of 25 are 1, 5, and 25.

Tags

CCSS.4.OA.B.4

Front

Is 23 a prime number?

Back

Yes, 23 is a prime number because it has no divisors other than 1 and 23.

Tags

CCSS.4.OA.B.4