Greatest Common Factor Practice

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 14 and 21?

Back

7

Front

What is the GCF of 4 and 10?

Back

2

Front

What is the GCF of 50 and 30?

Back

10

Front

What is the GCF of 6 and 30?

Back

6

Front

What is the GCF of 8, 20, and 28?

Back

4

Front

What are factors?

Back

Factors are numbers that can be multiplied together to get another number.

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

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.