2. REAL NUMBERS (as opposed to fake numbers?)

3. Two Kinds of Real Numbers Rational Numbers Irrational Numbers

4. Rational Numbers A rational number is a real number that can be written as a ratio of two integers. A rational number written in decimal form is terminating or repeating.

5. Examples of Rational Numbers 16 1/2 3.56 -8 1.3333… - 3/4

6. Irrational Numbers An irrational number is a number that cannot be written as a ratio of two integers. Irrational numbers written as decimals are non-terminating and non-repeating.

7. Examples of Irrational Numbers Square roots of non-perfect “squares” Pi 17

8. Whole Numbers Whole numbers are counting numbers and zero For example: 0,1,2,3,4,5,6,7,8,9,10…

9. Integers One of the subsets of rational numbers

10. What are integers? Integers are the whole numbers and their opposites. Examples of integers are 6 -12 0 186 -934

11. Whole numbers and Integers are rational numbers because they can be written as fraction with 1 as the denominator.

12. Irrational Numbers Rational numbers are NOT irrational numbers. The best way to learn about irrational numbers is to get familiar with some of them. (Sorting Activity)