body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Envision Math 2.0: Grade 6, Volume 1

EM

Envision Math 2.0: Grade 6, Volume 1 View details

2. Find Greatest Common Factor and Least Common Multiple

Continue to next subchapter

Exercise 8 Page 127

The prime factorization of a composite number is the number written as a product of its prime factors.

prime

Practice makes perfect

Let's start by recalling the definition of two important terms.

Term	Definition	Examples
Prime Number	A number that has exactly two positive factors, 1 and itself.	3, 5, 13
Composite Number	A number that is not a prime number.	4, 12, 63

Note that the only two factors of 19 are 1 and itself. Therefore, 19 is a prime number and it does not have a prime factorization.

Subchapter links

Do You Understand? p.127

Do You Know How? p.127

Assessment Practice p.130