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Section 1-2

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  1. Section 1-2 Real Numbers

  2. Number Line • used to show sets of real numbers • Positive numbers are to the right of zero • Negative numbers are to the leftof zero

  3. Classifying Numbers

  4. Natural Number Definition Symbol N • Counting Numbers

  5. Whole Number Definition Symbol W • The natural numbers and zero

  6. Integer Definition Symbol Z • Whole numbers and their opposites

  7. Rational Number Definition Symbol Q • Any number that can be written as a fraction where

  8. irRational Number Definition Symbol I • Non-repeating, non-terminating decimals • Can’t be written as a fraction

  9. Real Number Definition Symbol • All of the above

  10. Diagram

  11. Square Root • One of two equal factors of a number Radicand • Expression under the radical

  12. Principal Square Root • The nonnegative square root of a number Perfect Square • Square root is a rational root

  13. Graph • To draw or plot a point named by a number coordinate • The number that corresponds to a point on a number line

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