1. Lesson 9-2 Pages
The Real Number System
Lesson Check 9-1

2. What you will learn!
How to identify and compare numbers in the real number system.
How to solve equations by finding square roots.

3. Vocabulary
Irrational numbers
Real numbers

4. What you really need to know!
The set of real numbers consists of all natural numbers, whole numbers, integers, rational numbers, and irrational numbers. (Lesson 5-2)

5. What you really need to know!
Rational numbers can be written as fractions.
Irrational numbers are decimals that do not repeat or terminate.

6. What you really need to know!
Irrational Numbers: ,
Rational Numbers
1.8
0.7
-3.222…
Integers -5
-12
Whole Numbers 6 15
Natural Numbers
1, 2, 3 ,...

7. Page 441

9. 17 Natural Number Whole Number Integer Rational Number
Example 1:
Name all the sets of numbers to which each real number belongs. 17
Natural Number
Whole Number
Integer
Rational Number

10. Integer Rational Number
Example 1b:
Name all the sets of numbers to which each real number belongs.
Integer
Rational Number

11. Natural Number Whole Number Integer Rational Number
Example 1c:
Name all the sets of numbers to which each real number belongs.
Natural Number
Whole Number
Integer
Rational Number

12. Example 1d:
Name all the sets of numbers to which each real number belongs.
irrational number

13. < Replace the ? with <, > or = to make a true statement.
Example 2:
Replace the ? with <, > or = to make a true statement.
<

14. Order from least to greatest.
Example 2b:
Order from least to greatest.

15. Solve the equation. Round to nearest tenth if necessary.
Example 3:
Solve the equation. Round to nearest tenth if necessary.

16. Solve the equation. Round to nearest tenth if necessary.
Example 3:
Solve the equation. Round to nearest tenth if necessary.

17. Page 443
Guided Practice
#’s 3-12

19. Pages 441-443 with someone at home and study examples!
Read:
Pages with someone at home and study examples!

20. Homework: Pages
#’s even, even, even, 64, 65, 69-71, 77, 78
Lesson Check 9-2

25. Page
745
Lesson 9-2

26. Lesson Check 9-2

27. Page 441

28. Page 441