GCF

Front

What is the GCF (Greatest Common Factor)?

Back

The 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

You can find the GCF by listing the factors of each number and identifying the largest factor they have in common.

Front

What is the GCF of 20 and 30?

Back

10

Front

What is the GCF of 18 and 24?

Back

6

Front

Which pair of numbers has a GCF of 1?

Back

20 and 9.

Front

What is the GCF of 4 and 12?

Back

4

Front

What is the GCF of 20, 44, and 88?

Back

4

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

Can the GCF of two numbers be greater than either of the numbers?

Back

No, the GCF cannot be greater than the smallest number in the pair.