1. AND NOT THIS KIND OF EXPRESSION….. Section 1-2 Simplifying Expressions

2. How many words do you know the meaning of???? Numerical Expression - Value Equation Inequality symbol Inequality Sum Difference Product Quotient Power, base, exponent Grouping symbols Variable Values Algebraic expression

4. 2.Kinds of Numbers 0 natural numbers 0 whole numbers 0 integers

5. 2.Kinds of Numbers 45678 rational numbers 3

6. 2.Kinds of Numbers 45678 irrational numbers 3

7. #10#9 whole What kind of number is most useful to describe: the number of siblings a person has True or false: Every rational number is also an integer. If false, give a counterexample.

8. #11#10 True or false: Every rational number is also an integer. If false, give a counterexample. True or false: Every whole number is also a natural number. If false, give a counterexample. false

9. #12#11 True or false: Every whole number is also a natural number. If false, give a counterexample. True or false: Every natural number is also a rational number. If false, give a counterexample. false

10. #13#12 True or false: Every natural number is also a rational number. If false, give a counterexample. True or false: Every negative number is also an integer. If false, give a counterexample. true

11. #13 True or false: Every negative number is also an integer. If false, give a counterexample. true

12. Properties of Equality Reflexive Symmetric Transitive Addition Multiplication

13. 3.Properties Distributive Property ab + aca(b + c)= do some distributive property examples here

14. 3.Properties Commutative Property of Addition 6 + 7 =7 + 6

15. 3.Properties Commutative Property of Addition 5 - 10 =-10 + 5

16. 3.Properties Commutative Property of Multiplication

17. 3.Properties Associative Property of Addition 6 + 3 + 5

18. 3.Properties Associative Property of Addition (6 + 3) + 5

19. 3.Properties Associative Property of Addition 6 + (3 + 5)

20. 3.Properties Associative Property of Multiplication

21. 3.Properties Identity Property of Addition 5 + = 5

22. 3.Properties Identity Property of Multiplication 5 = 5

23. 3.Properties Inverse Property of Addition 7 + = 0

24. 3.Properties Inverse Property of Multiplication 7 = 1

25. 3.Properties Inverse Property of Addition 7+ = 0

26. 3.Properties Inverse Property of Multiplication 5 = 1

27. Closure Properties A+B and AB are unique real numbers. Ex: The sum of 12 and 6 is the real number 18 and the product of 12 and 6 is the real number 72.

28. 4.Classwork 1. 2. 3. 4. 5. 6. 7. 8.

29. 4.Classwork 1.Is subtraction commutative? 2.Is subtraction associative? 3.Is division commutative? 4.Is division associative? 5. Simplify each expression: (justify each step) 3(15x - 9y)+5(4y – x) ¼ (6 + 20y) – ½ (19 – 8y)

30. For practice, please complete the following homework Sections 1.1 and 1.2) I will hand out the assignment guide to you. It is due the next time I see you! Good luck and good job today. http://devour.com/video/world-record-parallel- parking/ http://devour.com/video/world-record-parallel- parking/

31. http://youtube/wwWzjjbIISw

32. What is a star “*” operation?