NC6NS4 Lesson 6 GCF/LCM/Prime Factorization

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

Identify a non-prime number from the following: 2, 3, 5, 9.

Back

9 is a non-prime number because it can be divided by 1, 3, and 9.

Front

What is the least common multiple (LCM)?

Back

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

Front

Find the LCM of 4 and 5.

Back

The LCM of 4 and 5 is 20.

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

Find the GCF of 12 and 16.

Back

The GCF of 12 and 16 is 4.

Front

What is prime factorization?

Back

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

Front

Find the prime factorization of 30.

Back

The prime factorization of 30 is 2 x 3 x 5.

Front

What is the LCM of 6 and 8?

Back

The LCM of 6 and 8 is 24.

Front

If Maria runs every 3 days and swims every 5 days, how often will she do both?

Back

Maria will run and swim together every 15 days.