Greatest Common Factor

Front

What is the Greatest Common Factor (GCF)?

Back

The GCF is the largest positive integer 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

GCF of 12 and 28?

Back

4

Front

GCF of 18 and 24?

Back

6

Front

GCF of 16 and 18?

Back

2

Front

What are the common factors of 16 and 24?

Back

1, 2, 4, and 8

Front

What is a factor?

Back

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

Front

What is the relationship between GCF and prime factorization?

Back

The GCF can be found by multiplying the lowest powers of all prime factors common to the numbers.

Front

GCF of 30 and 45?

Back

15

Front

GCF of 48 and 60?

Back

12