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Ms. Garcia Math |
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Real Number |
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is a value that represents a quantity along a continuous line. |
-5, 0, 329, ¾ , e, -½, Pi, … |
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Natural (Counting) Numbers |
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Natural numbers are the counting numbers {1, 2, 3,...} (the positive integers) |
1, 2, 3, … |
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Whole Numbers |
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A whole number is a number that is not a fraction or a decimal |
0, 1, 2, 3, … |
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Integers |
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Integers are the natural numbers and their negatives {... −3, −2, −1, 0, 1, 2, 3, ...}. |
…-3, -2, -1, 0, 1, 2 3, … |
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Rational |
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Rational numbers are the ratios of integers, also called fractions |
1/2, 2/3, 5/8 |
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Irrational Numbers |
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an irrational number is any real number that cannot be expressed as a fraction a/b, where a and b are integers, with b non-zero, |
The square roots of all numbers which are not perfect squares are irrational |
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Terminating decimal |
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It's a decimal with a finite number of digits.
It also must be a rational number. |
¾ = 0.375 (it has three decimal digits) |
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Repeating Decimal |
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A decimal that repeats a patern forever … |
1/3 = 0.33333333333333… |
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