1. The Real Number System
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2. Bellringer What is the absolute value of -5?
What is the opposite of 50?
What is the reciprocal of 1/3?
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3. The Real Number System
The Real Number System is divided into two categories:
Rational Numbers
Irrational Numbers
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4. The Real Number System
Rational Numbers – Can be written as the ratio of two integers
May be terminating or repeating!
Rational Numbers Include:
Natural Numbers
Whole Numbers
Integers
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5. Natural Numbers Known as the counting numbers.
1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
CAUTION!!! The Natural Numbers DO NOT include ZERO!
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6. Start at zero 0, 1, 2, 3, 4, 5 . . . 576. . . Whole Numbers 11/30/2018
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7. Integers Whole Numbers Negative Whole Numbers
Zero (REMEMBER: Zero is neither positive or negative!)
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8. Irrational Numbers
Irrational Numbers – Cannot be written as the ratio of two integers
Irrational Numbers Are:
Non-terminating and Non-repeating
Famous Irrationals 
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Singler

9. The Real Number System Real Numbers Rational Numbers
Irrational Numbers
1/2 -2 2 3 3
2/3 5 2 3 4
15%
-0.7
1.456
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Singler

10. The Real Number System Real Numbers Rational Numbers
Irrational Numbers
Integers 2 3 3 -2
1/2
2/3 5 2 3 4
- 0.7
15%
1.50
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Singler

11. The Real Number System Real Numbers Rational Numbers
Irrational Numbers
Integers
Whole 2 3
1/2 3
2/3 5 2 3 4 -2
- 0.7
15%
1.456
11/30/2018
Singler

12. The Real Number System Real Numbers Rational Numbers
Irrational Numbers
Integers
Whole 2
Natural 3
1/2
2/3 3 5 2 3 4 -2
- 0.7
15%
1.456
11/30/2018
Singler