1. Warm-Up
What is a real number?
7 2 =

2. Exploring Rational Numbers
Objective:
To identify a value by its classification in the real number system.

3. Rational and Irrational Numbers
Rational Number: is a number that can be expressed in the form 𝑎 𝑏 , where a and b are integers and 𝑏≠0.
Rational Numbers are positive or negative numbers that are whole numbers, have a terminating decimal, or a repeating pattern decimal.
Examples: 7, 1.25, 3.333

4. Rational and Irrational Numbers
Irrational Number: A number that cannot be expressed in the form 𝑎 𝑏 , where a and b are integers and 𝑏≠0.
Irrational numbers have no specific pattern decimal.
Example:

5. Rational Numbers
Whole Numbers – consists of all positive whole numbers including zero.
{0, 1, 2, 3, 4}
Number Set – consists of a specific group of numbers listed from least to greatest.
Example: {-1, 3, 5, 8}

6. Rational Numbers
Integers: consists of all positive and negative whole numbers. (including zero)
Example: {…-2, -1, 0, 1…}
Natural Numbers: also known as “counting numbers”, are all positive whole numbers greater than one.
Example: {1, 2, 3, 4…}

7. Homework
Worksheet “Sets of Real Numbers” all ODD.