GCF

Front

What is the Greatest Common Factor (GCF)?

Back

The GCF is the largest number that divides two or more numbers without leaving a remainder.

Front

How do you find the GCF of two numbers?

Back

List the factors of each number and identify the largest factor they have in common.

Front

What is a factor?

Back

A factor is a whole number that can be divided evenly into another number.

Tags

CCSS.4.OA.B.4

Front

List the factors of 15.

Back

1, 3, 5, 15

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CCSS.4.OA.B.4

Front

List the factors of 24.

Back

1, 2, 3, 4, 6, 8, 12, 24

Tags

CCSS.4.OA.B.4

Front

Which number is a factor of 6?

Back

2 is a factor of 6.

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CCSS.4.OA.B.4

Front

Which number is not a factor of 24?

Back

14 is not a factor of 24.

Tags

CCSS.4.OA.B.4

Front

What is the GCF of 12 and 18?

Back

The GCF of 12 and 18 is 6.

Front

What is the GCF of 8 and 20?

Back

The GCF of 8 and 20 is 4.

Front

If the GCF of two numbers is 1, what does that mean?

Back

It means the two numbers are coprime, having no common factors other than 1.