DO NOW

Evaluate the following and find the absolute value. Then identify whether your solution is a prime or composite number. If it is composite, find the prime factorization:

1.|-3|2.|-5 + 20|3.|6-7|

Pop Notebook Quiz!1) What does it mean to say 4 is a factor of 16?2) What components make up an expression? 3) How is an expression different from an equation?4) In the chart we made on types of numbers, what

type of numbers were included in the inner most circle?

5) What are the steps (name at least 3) to evaluating the prime factorization of a number.

Greatest Common Factor

• Find the biggest number you can think of that goes in evenly to both:

16 and 3615 and 459 and 22

???

Cornell Notes

• Greatest Common Factor

Ex: 24 and 36

• the largest integer that divides without remainder into a set of integers

-The biggest number that goes in evenly to both 24 and 36 is 12.

Cornell Notes

• Factoring Expressions

Ex: 16x²y²

• Use prime factorization to determine a product of primes for coefficients

• Write out each variable in the expression

2 * 2 * 2 * 2 * x * x * y * y

Cornell Notes

• GCF of expressions

Ex: 16x²y and 24xy

• Same as GCF of numbers!

-The GCF of 16 and 24 is 8-The GCF of x²y and xy is

xy

-The total GCF is 8xy

Practice-3 Tasks

1) With partner: Create 15 sets of numbers and find GCF-quiz each other!a. 5 pairs of numbersb. 5 triplesc. 5 quadruples

2) Factor the expressions on the board3) Find the GCF of the expressions on the board