Greatest Common Factor & Least Common Multiple

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) of two or more numbers is the smallest multiple that is exactly divisible by each of the numbers.

Front

What is the greatest common factor (GCF)?

Back

The greatest common factor (GCF) of two or more numbers is the largest number that divides each of the numbers without leaving a remainder.

Front

How do you find the least common multiple of two numbers?

Back

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

Front

How do you find the greatest common factor of two numbers?

Back

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

Front

What is the LCM of 4 and 5?

Back

20

Front

What is the GCF of 8 and 12?

Back

4

Front

If two numbers are 15 and 25, what is their GCF?

Back

5

Front

If two numbers are 10 and 30, what is their LCM?

Back

30

Front

What is the LCM of 6 and 8?

Back

24

Front

What is the GCF of 18 and 24?

Back

6