Greatest Common Factor (GCF)

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 they have in common.

Front

What is the GCF of 4 and 16?

Back

4

Front

What is the GCF of 20 and 35?

Back

5

Front

Which is NOT a factor of 12?

Back

5

Front

What is the GCF of 20 and 70?

Back

10

Front

What is the GCF of 6 and 24?

Back

6

Front

List the factors of 12.

Back

1, 2, 3, 4, 6, 12

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.