GCF

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

List the factors of each number and identify the largest factor they have in common.

Front

What is the GCF of 6 and 21?

Back

3

Front

What is the GCF of 20 and 30?

Back

10

Front

What is the GCF of 4 and 12?

Back

4

Front

Which number is a factor of 6?

Back

2

Front

What are factors?

Back

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

Front

What is the relationship between GCF and prime factors?

Back

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

Front

What is the GCF of 15 and 25?

Back

5

Front

What is the GCF of 8 and 12?

Back

4