2 What are factors?Factors are whole numbers multiplied together to make a product. (A number is divisible by its factors.) 2 x 3 = 6 product factors
3 Example 1: List all the factors of each number. 181 x 18 Start by listing all2 x 9 the pairs of factors3 x 6The factors of 18 are:1, 2, 3, 6, 9, and 18
4 Example 1: List all the factors of each number. 131 x 13 Start by listing allthe pairs of factorsThe factors of 13 are:1 and 13, which makes 13 a prime number
5 What is prime factorization? The prime factorization of a number is the number written as the product of its prime factors.
6 Example 2: Write the prime factorization of each number. Use a factor tree:36 *Start with any two factors you think of* then keep usingfactors until you getonly primesThe prime factorization of 36 is: 22.32
7 Example 2: Write the prime factorization of each number. (B) Use a ladder diagram: 2 I 54 * Start with the 3 I 27 smallest 3 I 9 prime and 3 divide The prime factorization of 54 is: =