LCM and GCF

Front

What is the greatest common factor (GCF)?

Back

The greatest common factor (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

To find the GCF, list the factors of each number and identify the largest factor that appears in both lists.

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) is the smallest positive integer that is a multiple of two or more numbers.

Front

How do you find the LCM of two numbers?

Back

To find the LCM, list the multiples of each number and identify the smallest multiple that appears in both lists.

Front

What is a factor?

Back

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

Front

What is a multiple?

Back

A multiple of a number is the product of that number and an integer.

Front

Find the GCF of 30 and 45.

Back

The GCF of 30 and 45 is 15.

Front

Find the LCM of 4 and 12.

Back

The LCM of 4 and 12 is 12.

Front

Find the LCM of 6 and 24.

Back

The LCM of 6 and 24 is 24.

Front

Find the GCF of 28 and 35.

Back

The GCF of 28 and 35 is 7.