Finding Factors and GCF

Front

What is the GCF (Greatest Common Factor)?

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 are factors?

Back

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

Front

List the factors of 18.

Back

1, 2, 3, 6, 9, 18.

Front

List the factors of 24.

Back

1, 2, 3, 4, 6, 8, 12, 24.

Front

What is the GCF of 18 and 24?

Back

6.

Front

What is the GCF of 30 and 45?

Back

15.

Front

True or False: The GCF of two prime numbers is always 1.

Back

True.

Front

If a number is divisible by 2, what does it mean?

Back

It means the number is even.

Front

If a number ends in 0, what is it divisible by?

Back

It is divisible by 10.