GCF/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, list the multiples of each number and identify the smallest multiple that appears in both lists.

Front

What is a multiple?

Back

A multiple of a number is the product of that number and an integer. For example, multiples of 3 are 3, 6, 9, 12, etc.

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 all of them 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 GCF of 12 and 18?

Back

The GCF of 12 and 18 is 6.

Front

What is the LCM of 4 and 9?

Back

The LCM of 4 and 9 is 36.

Front

Which of the following is a multiple of 7: 14, 17, 22?

Back

14 is a multiple of 7.

Front

If Peter has 18 oranges, 27 pears, and 12 bananas, what is the greatest number of fruit baskets he can make?

Back

Peter can make 3 fruit baskets.

Front

The school cafeteria serves tacos every sixth day and cheeseburgers every eighth day. How many days until they are both on the menu again?

Back

They will both be on the menu again in 24 days.