1. MAT 105 SPRING 2009
Section 1.1
Numbers

2. Sets of Numbers Natural numbers (also known as __________________)
MAT 105 SPRING 2009
Sets of Numbers
Natural numbers (also known as __________________)
Whole numbers
Integers

3. Sets of Numbers
Rational numbers
Irrational numbers

4. Sets of Numbers
Real numbers
Non-real numbers (imaginary numbers)

5. Flow Chart of Sets of Numbers

6. Real Number Line
Indicate the location of the following numbers on the real number line.

7. Natural: ______________________________________
Write the numbers from the list that belong to each of the following sets.
Natural: ______________________________________
Whole: _______________________________________
Integers: _____________________________________
Rational: _____________________________________
Irrational: _____________________________________
Real: _________________________________________
Imaginary: ____________________________________

8. Absolute Value of a Real Number
The absolute value of a positive # is _______________.
The absolute value of a negative # is _______________.
The absolute value of zero is ___________.

9. Reciprocal The reciprocal of a number is one divided by the number.
Invert the numerator & denominator.
Find the reciprocal of

10. Denominate Numbers
Numbers that represent a __________________ and are written with the ________ of _____________________.
Examples:

11. Literal Numbers Literal numbers: numbers represented by letters
Variables: may take on different values
Constants: held fixed