prime factorization

Front

What is prime factorization?

Back

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

Tags

CCSS.4.OA.B.4

Front

What are prime numbers?

Back

Prime numbers are natural numbers greater than 1 that have no positive divisors other than 1 and themselves.

Tags

CCSS.4.OA.B.4

Front

What is the prime factorization of 70?

Back

2 x 5 x 7

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

Find the GCF of 39 and 26.

Back

13

Front

What is a factor tree?

Back

A factor tree is a diagram used to break down a number into its prime factors.

Front

Use a factor tree to find the prime factorization of 32.

Back

2 x 2 x 2 x 2 x 2

Front

What is the least common multiple (LCM)?

Back

The LCM is the smallest multiple that is exactly divisible by two or more numbers.

Front

How do you find the LCM of 3 and 5?

Back

The LCM of 3 and 5 is 15.

Front

If every third visitor gets a sticker and every fifth gets a keychain, who gets both first?

Back

The 15th visitor gets both the bumper sticker and the key chain.