FAST Review: GCF, LCM, Prime Factorization

Front

What is the Greatest Common Factor (GCF)?

Back

The GCF is the largest number that divides two or more numbers without leaving a remainder.

Front

How do you find the GCF of two numbers?

Back

List the factors of each number and identify the largest factor they have in common.

Front

What is the Least Common Multiple (LCM)?

Back

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

Front

How do you find the LCM of two numbers?

Back

List the multiples of each number and identify the smallest multiple they have in common.

Front

What is prime factorization?

Back

Prime factorization is expressing a number as the product of its prime factors.

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

Front

What is a composite number?

Back

A composite number is a natural number greater than 1 that is not prime, meaning it has more than two positive divisors.

Front

What is the prime factorization of 60?

Back

2 × 2 × 3 × 5 or 2² × 3 × 5.

Front

What is the prime factorization of 100?

Back

2 × 2 × 5 × 5 or 2² × 5².

Front

What is the prime factorization of 84?

Back

2 × 2 × 3 × 7 or 2² × 3 × 7.