1. Section 1.1 Numbers

2. 2 Sets of Numbers Natural numbers (also known as __________________) Whole numbers Integers

3. 3 Sets of Numbers Rational numbers Irrational numbers

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

5. 5 Flow Chart of Sets of Numbers

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

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

8. 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. 9 Reciprocal The reciprocal of a number is one divided by the number. Invert the numerator & denominator. Find the reciprocal of

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

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