real numbers. set: a collection of objects – like a group terminating number: a number that ends...
TRANSCRIPT
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Real Numbers
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• Set: a collection of objects
– like a group
• Terminating Number: a number that ends
– Example: 4
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•Repeating Number: a number that goes on forever WITH a pattern.– Example: 0.898889888988…
•Non-Terminating or Non-Repeating Number: a number that goes on forever without a pattern– Example:
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An easy way to remember the difference between
rational and irrational….
RATIONALThe word RATIO is in the word
rational. That’s because Rational Numbers are a ratio
of two numbers.
RATIO
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6 or 6 1
Can also be written as 6.0
-21
Can also be written as -2.0
12
Can also be written as 0.5
-54
Can also be written as -1.25
23
Can also be written as 0.666666666...
2155
Can also be written as 0.38181818...
5383
Can also be written as0.62855421687...
the decimals will repeatafter 41 digits
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Real Numbers
• Real numbers are either Rational or Irrational
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Definition Facts/Characteristics
Example Non-Example
Irrational Numbers
They are crazy! They go on forever without a pattern.
Numbers that don’t repeat and don’t terminate.
√2, .8798945…, ∏
½, 2.35, -¼, -.3
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Definition Facts/Characteristics
Example Non-Example
Rational Numbers
Numbers that terminate or repeat.
√2, .8798945…, ∏
Rational is the most loving set of Real Numbers – they let everyone in.
½, 2.35, -¼, -.3
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Rational numbers can be broken down further into 3 sets of numbers: Natural Numbers (Counting
Numbers) Whole Numbers Integers
Sets of Real Numbers
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Definition Facts/Characteristics
Example Non-ExampleIntegers
½, 2.35, -¼, -.3 …-2, -1, 0, 1, 2…
Positive & negative whole numbers, including zero.
Integers are like whole numbers, except they include negatives.
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Definition Facts/Characteristics
Example Non-Example
Whole Numbers
Positive numbers and zero that do not have fractions or decimals.
Whole numbers have zero because they have an ‘o’
0, 1, 2, 3, 4… -3, -4.3, ½, 2.35
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Definition Facts/Characteristics
Example Non-Example
Natural Numbers
Positive numbers that are used to count.
Smallest most restrictive set.
1, 2, 3, 4, 5… 0, -3, ½, 2.35
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Real Numbers Diagram
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Real Numbers Flow Chart