LCM and GCF Review

Front

What does GCF stand for in mathematics?

Back

GCF stands for Greatest Common Factor, which is the largest positive integer that divides all the given numbers without leaving a remainder.

Front

What does LCM stand for in mathematics?

Back

LCM stands for Least Common Multiple, which is the smallest positive integer that is a multiple of all the given numbers.

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 identify the largest factor that appears in both lists.

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 identify the smallest multiple that appears in both lists.

Front

What is the GCF of 15 and 36?

Back

The GCF of 15 and 36 is 3.

Front

Is 51 a prime number?

Back

No, 51 is not a prime number because it has divisors other than 1 and itself (it can be divided by 3 and 17).

Front

What are prime numbers divisible by?

Back

Prime numbers are divisible by only 1 and themselves.

Front

What is the GCF of 99 and 54?

Back

The GCF of 99 and 54 is 9.

Front

What is the LCM of 9 and 45?

Back

The LCM of 9 and 45 is 45.

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 two numbers.