Math 6 - GCF & LCM Practice

Front

What is the Least Common Multiple (LCM)?

Back

The LCM of two or more numbers is the smallest number that is a multiple of each of the numbers.

Front

How do you find the LCM of 4 and 14?

Back

List the multiples of each number: Multiples of 4: 4, 8, 12, 16, 20, 24, 28, ...; Multiples of 14: 14, 28, 42, ...; The LCM is 28.

Front

What is the Greatest Common Factor (GCF)?

Back

The 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 14 and 22?

Back

List the factors of each number: Factors of 14: 1, 2, 7, 14; Factors of 22: 1, 2, 11, 22; The GCF is 2.

Front

What are the factors of 25?

Back

The factors of 25 are 1, 5, and 25.

Front

How do you find the GCF of 20 and 30?

Back

List the factors: Factors of 20: 1, 2, 4, 5, 10, 20; Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30; The GCF is 10.

Front

What is the relationship between GCF and LCM?

Back

The product of the GCF and LCM of two numbers is equal to the product of the numbers themselves.

Front

How can Sara make bouquets with 16 red flowers and 24 yellow flowers?

Back

Find the GCF of 16 and 24, which is 8. She can make 8 bouquets with 2 red and 3 yellow flowers in each.

Front

What is a multiple?

Back

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

Front

What is a factor?

Back

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