Greatest Common Factor Concepts

Front

What is the greatest common factor (GCF)?

Back

The greatest common factor (GCF) is the largest positive integer that divides all the given numbers without leaving a remainder.

Front

How do you find the GCF of two numbers?

Back

To find the GCF of two numbers, list the factors of each number and identify the largest factor that appears in both lists.

Front

What is the GCF of 12 and 15?

Back

3

Front

True or False: Two composite numbers can never have the GCF as 1.

Back

False

Front

What is the GCF of 30 and 45?

Back

15

Front

What is the GCF of 29 and 51?

Back

1

Front

What is the GCF of 7 and 14?

Back

7

Front

Can the GCF of two prime numbers be greater than 1?

Back

No, the GCF of two prime numbers is always 1.

Front

What is a factor?

Back

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

Front

What is a composite number?

Back

A composite number is a positive integer that has at least one positive divisor other than one or itself.