1-3 REAL Numbers :- 1-3 REAL Numbers :- New Vocabulary: Real Numbers : Natural Numbers : Whole Numbers : Integers : Rational Numbers : Irrational Numbers : Inequality : A number that is either RATIONAL or IRRATIONAL “Counting Numbers” 1,2,3….etc [note: not zero or any negative numbers.] Counting numbers inclusive of zero 0,1,2,3…etc [Note: no negative numbers.] Whole numbers & their negatives -2,-1,0,1,2 …etc A number that can be written as a ratio of two integers. Ex: ½ or -3/4 [note: In decimal form the number is either terminating or repeating. Ex: 8.222…. ] A number that can’t be written as a ratio of two integers. Ex: “pi” [Note: In decimal form the number is non-terminating & non-repeating ex: π ] A mathematical sentence that uses an inequality symbol. Ex: ≤, ≥, < …etc Absolute Value :All positive REAL numbers.

REAL NUMBERS RATIONAL NUMBERS IRRATIONAL NUMBERS NATURAL NUMBERS WHOLE NUMBERS INTEGERS NUMBERS RATIONAL NUMBERS

Name the set(s) of numbers to which each number belongs:- 1) -12 4) 5 / 12 3) ) 12 5) √4 6) √6

Comparing Numbers…. INEQUALITIES Less Than Greater Than Less Than and Equal to Greater Than and Equal to Is not equal to Equal to

Ordering Fractions…. Which is larger, - 1 / 8 or - 1 / 2 ? Hint: you may want to look at the decimal equivalents! or you may remember, number get larger as we move to the right on a number line! /2 -1/8 Write - 3 / 8, - 1 / 2 and - 5 / 12 in order from least to greatest.

CLASS WORK = PAGE 20 – 21 = NUMBERS “even’s” up to # 40 & # 57 – 62, 64 & 65 HOME WORK = Practice Worksheet 1-3 = Numbers 1-33