GCF and LCM

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

How do you find the LCM of two numbers?

Back

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

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 GCF of two numbers?

Back

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

Front

What are multiples of a number?

Back

Multiples of a number are the results of multiplying that number by whole numbers (e.g., multiples of 3 are 3, 6, 9, 12, ...).

Front

What are factors of a number?

Back

Factors of a number are the whole numbers that can be multiplied together to get that number (e.g., factors of 12 are 1, 2, 3, 4, 6, 12).

Front

Find the LCM of 6 and 8.

Back

The LCM of 6 and 8 is 24.

Front

Find the GCF of 14 and 20.

Back

The GCF of 14 and 20 is 2.

Front

Find the GCF of 20 and 35.

Back

The GCF of 20 and 35 is 5.

Front

Find the GCF of 32 and 40.

Back

The GCF of 32 and 40 is 8.