1. 1.2- Algebraic Expressions and Sets of Numbers
Chapter 1
1.2- Algebraic Expressions and Sets of Numbers

2. Variable-

3. Variable- letters that represent numbers

4. Variable- letters that represent numbers
Algebraic Expression-

5. Variable- letters that represent numbers
Algebraic Expression- numbers and variables connected by operations

6. Variable- letters that represent numbers
Algebraic Expression- numbers and variables connected by operations
Origin-

7. Variable- letters that represent numbers
Algebraic Expression- numbers and variables connected by operations
Origin- the number 0 on the number line

8. Variable- letters that represent numbers
Algebraic Expression- numbers and variables connected by operations
Origin- the number 0 on the number line
Unit Distance (absolute value)-

9. Variable- letters that represent numbers
Algebraic Expression- numbers and variables connected by operations
Origin- the number 0 on the number line
Unit Distance (absolute value)- the distance from 0 (positive and negative)

10. Negative Numbers-

11. Negative Numbers- numbers to the left of the origin

12. Negative Numbers- numbers to the left of the origin
Positive Numbers-

13. Negative Numbers- numbers to the left of the origin
Positive Numbers- numbers to the right of the origin

14. Natural Numbers-

15. Natural Numbers- {1, 2, 3, ….}

16. Natural Numbers- {1, 2, 3, ….}
Whole Numbers-

17. Natural Numbers- {1, 2, 3, ….}
Whole Numbers- {0, 1, 2, 3,….}

18. Natural Numbers- {1, 2, 3, ….}
Whole Numbers- {0, 1, 2, 3,….}
Integers-

19. Natural Numbers- {1, 2, 3, ….}
Whole Numbers- {0, 1, 2, 3,….}
Integers- {…, -3, -2, -1, 0, 1, 2, 3, …}
Set-

20. Natural Numbers- {1, 2, 3, ….}
Whole Numbers- {0, 1, 2, 3,….}
Integers- {…, -3, -2, -1, 0, 1, 2, 3, …}
Set- collection of objects called elements

21. Rational Numbers-

22. Rational Numbers- a/b, b≠0; therefore, all decimals terminate or repeat
ex. 1.3, 2/3 = 0.66, 1/11 =

23. Rational Numbers- a/b, b≠0; therefore, all decimals terminate or repeat
ex. 1.3, 2/3 = 0.66, 1/11 =
Irrational Numbers-

24. Rational Numbers- a/b, b≠0; therefore, all decimals terminate or repeat
ex. 1.3, 2/3 = 0.66, 1/11 =
Irrational Numbers- decimal does not terminate nor repeats
ex. Π ≈ …. , √2 ≈

25. Opposite- same number but the sign changes
ex. a is the opposite of -a
Double negative- two negatives/minus signs that touch become a positive
ex. –(-a) = a

26. Find the perimeter and area of the rectangle.
P = 2L + 2W A = LW 2 3

27. Evaluate 3x – y x = 5 y = 7

28. Determine whether the statement is true or false and why.
-4 is a whole number
1/3 is an irrational number
Every rational number is an integer

29. Find each absolute value,
|3|
|-1/7|
-|-8|

30. Write the opposite of each number.5
-1/3

31. Writing Phrases as Algebraic Expressions
Addition Subtraction Multiplication Division

32. Translate each phrase into an algebraic expression.
Use x to represent the unknown number.
Eight times a number
Three more than eight times a number
The quotient of a number and -7
One and six-tenths subtracted from twice a number
Six less than a number x
Twice the sum of four and a number

33. You Do: Student organizer p. 3-4 #1-10

34. Classwork/Homework
textbook p. 14 #1-10
p #4, 6, 8, 10, 32, 34, 58, 60, , 66, 68, 74, 76, 78, 80, , 88