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 NUMBERSREAL 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) -4.67

2) 12

5) √4

6) √6

Comparing Numbers….INEQUALITIES INEQUALITIES

INEQUALITIES

Less Than

Greater Than

Less Than and Equal to

Greater Than and Equal to

Is not equal to Equal to

Ordering Fractions….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!

-1 0 1-1/2

-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