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Section 1-2

Section 1-2. Real Numbers. Number Line. used to show sets of real numbers Positive numbers are to the right of zero Negative numbers are to the left of zero. Classifying Numbers. Natural Number. Definition. Symbol. N. Counting Numbers. Whole Number. Definition. Symbol. W.

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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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