Greatest Common Factor Review

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

1. List the factors of each number. 2. Identify the common factors. 3. Choose the largest common factor.

Front

What are factors?

Back

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

Front

List the factors of 15.

Back

1, 3, 5, 15.

Front

What is the GCF of 6 and 21?

Back

3.

Front

What is the GCF of 30 and 28?

Back

2.

Front

What is the GCF of 28 and 40?

Back

4.

Front

What is prime factorization?

Back

Prime factorization is expressing a number as the product of its prime factors.

Front

Using a factor tree, what is the prime factorization of 20?

Back

5 x 2 x 2.

Front

What is the smallest prime number?

Back

2.