1. Aim: How do we classify real numbers?

2. What types of numbers were listed?
Whole Numbers
Integers
Square Roots
Fractions
Decimals
Irrational

3. Classifying Real Numbers
In the Real Number System, there are two sets of numbers, Rational & Irrational.
Rational Numbers are numbers that can be expressed as a fraction (a/b where a & b are integers.) When written as a decimal, these numbers terminate or have a repeating pattern.
Irrational Numbers are numbers that cannot be expressed as a fraction. These decimals are nonterminating & have no pattern. Non perfect squares are irrational.

4. Subsets of Rational Numbers
Integers are positive & negative whole numbers (including zero) (… -2, -1, 0, 1, 2, …)
Whole Numbers are the set of counting numbers and zero. (0, 1, 2, 3, …)
Natural (Counting) Numbers are the set of positive whole numbers. (1, 2, 3, …)

5. Let’s watch some videos about number sets!
?v=m94WTZP14SA&feature=rel ated
?v=KKfoORhiSA0&feature=relat ed

6. Ex. 1 – Which of the following number sets does -12/4 belong?
I. Integers
II. Whole Numbers
III. Rational Numbers
IV. Real Numbers a. I only b. I, III & IV c. I & IV only d. All of the above

8. Now let’s go back to those numbers you gave me before & classify them!

9. Homework Reminder!
Worksheet 1.1 is due tomorrow. Please write it in your planner now and put the worksheet in your folder.

10. Exit Ticket