1. U NIT 1 P RE A LGEBRA, R ELATIONSHIPS B ETWEEN Q UANTITIES Lesson 1: Real Numbers (1-3)

2. V OCABULARY : Positive Numbers: Values greater than zero Negative Numbers: Values less than zero Natural numbers: 1, 2, 3… Whole Numbers: 0, 1, 2, 3…

3. Integers: …-3, -2, -1, 0, 1, 2, 3… Rational Numbers: numbers that can be written in the form where a and b are integers and b≠ 0 Irrational Numbers: numbers that cannot be expressed as terminating or repeating decimals Real Numbers: Irrational numbers and real numbers together (all numbers)

5. E XAMPLES : N AME THE SET OF NUMBERS TO WHICH EACH REAL NUMBER BELONGS 1. 2. 3. 4.

6. Inequality: mathematical sentence that compares the values of two expressions using an inequality symbol. ≤, less than or equal to <, less than ≥, greater than or equal to >, greater than

8. E XAMPLE : O RDER REAL NUMBERS FROM LEAST TO GREATEST ( OR VICE VERSA ) 1. 2.

9. 3.

10. Square Root: one of two equal factors of a number means the square root of 16 is the radical sign, used to indicate the square root of a number

11. S IMPLIFY THE SQUARE ROOTS : 1. 2. 3. 4.

12. HOMEWORK pg. 20-21 #9-49 odd, 51-68, 72-74