LCM and GCF Review

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 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

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 the GCF of 18 and 27?

Back

The GCF of 18 and 27 is 9.

Front

What is the LCM of 4 and 5?

Back

The LCM of 4 and 5 is 20.

Front

If Peter has 18 oranges and 27 pears, how many pears will be in the greatest number of fruit baskets he can make?

Back

9 pears.

Front

If Sara has 16 red flowers and 24 yellow flowers, what is the greatest number of bouquets she can make?

Back

8 bouquets.

Front

What are the multiples of 3?

Back

The multiples of 3 include: 3, 6, 9, 12, 15, 18, etc.

Front

What is the GCF of 28 and 35?

Back

The GCF of 28 and 35 is 7.