1. Do Now 9/20/10 Copy HW in your homework log. Text p.68, #14-39

2. Objective graph and compare positive and negative numbers.

3. WHOLE NUMBER a number that is whole (no decimal) and positive. 0, 1, 2, 3, … Section 2.1, “Use Integers and Rational Numbers”

4. INTEGER all whole numbers and there opposites. … -3, -2, -1, 0, 1, 2, 3, …

5. RATIONAL NUMBER numbers that can be written as the quotient of two integers (a fraction). … -3,-2.5, -2, -1 ½, -1, 0, 1, 1 ½, 2, 2.5, 3, …

6. REAL NUMBER the set of all rational and irrational numbers.

7. Using the categories REAL NUMBERS, INTEGERS, RATIONAL NUMBERS, and WHOLE NUMBERS label the VENN diagram below.

8. Real Numbers Rational Numbers Integers WholeNumbers Whole Numbers 0,1,2,3,4,5… 0,1,2,3,4,5… Integers Integers -3,-2,-1, 0,1,2,3… Rational Numbers Rational Numbers numbers that can numbers that can represented as a ratio or fraction

9. OPPOSITES OPPOSITES Two numbers that are the same distance from ZERO. 012345-2-3-4-5 negative positivezero What is the opposite of -3? Opposite of -3 = 3

10. ABSOLUTE VALUE ABSOLUTE VALUE The distance a number is away from ZERO. Distance is always positive. 012345-2-3-4-5 negative positivezero What is the absolute value of -4? or |-4| |-4| = 4 What is -|-4| -|-4| = -4

11. CONDITIONAL STATEMENT Has a hypothesis and a conclusion. An IF-THEN STATEMENT is a conditional statement where the ‘if’ is the hypothesis and the ‘then’ is the conclusion. IF-THEN STATEMENTS are either TRUE or FALSE. If the statement is FALSE, solve it by providing a COUNTEREXAMPLE. If a number is positive, then its opposite is positive. FALSE; the number would be negative. If a number is a rational number, then the number is an integer. then the number is an integer. FALSE; 0.5 is an example of a rational number that is not an integer.