1. 5-3(D) Real Numbers

2. Rational Number – any number written in the form a/b, where b ≠ 0.
Ex: ½, -2/3, 17/5, -14/11, 3/1
- a rational number is also a decimal that terminates or repeats indefinitely
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Ex: 0.5, -0.3, …, -5, 1.27, …

3. Whole Number – all positive numbers including 0. {0. 1. 2. 3. …}
Integers – all positive and negative numbers. {..-2, -2, 0, 1, 2, …}
Natural Numbers – all positive numbers not including zero. {1, 2, 3, …}

4. True and False All whole numbers are integers.
All natural numbers are integers.
All natural numbers are whole numbers.
All whole numbers are natural numbers.
All whole numbers are positive numbers.

5. Irrational Numbers
A number that cannot be written in the form of a fraction.
Non-terminating decimals
Non-repeating decimals