Types of Numbers
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8 Terms
1
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real numbers
all numbers on the number line
2
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rational number
can be expressed as a fraction, a decimal that repeats, or a decimal that ends
3
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natural number
things you can see in nature; all positive numbers (0 to infinity)
4
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irrational numbers
square roots that are not perfect squares; cannot be expressed as fractions // Special numbers: pi, e, a decimal that does not repeat and does not end
5
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integer
whole numbers
6
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imaginary numbers
anything with an i, a number in which the square is a negative real number (sqrt of -6)
7
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counting numbers
1 to infinity
8
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complex number
anything, can be written in the notation a + bi