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### 12 Cards in this Set

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 Absolute Value (Positive) distance between a number and zero and the number line; the corresponding unsinged number. -4= 4 +4= 4. Counting Numbers See also Natural Numbers, the set of positive numbers used to count objects. 1,2,3,4,5,... Integers The set of numbers including all the whole numbers and their opposites (the positive whole numbers, the negative whole numbers, and zero. Irrational Numbers The set including all numbers that are non- terminating, non- repeating decimals. Natural Numbers The set of positive numbers used to count objects (also called counting numbers). 1, 2, 3, 4, 5, ... Negative Numbers The set of numbers to the left of zero on the number line--numbers less than zero. Number Line A horizontal line that has points that correspond to numbers. The points are spaced according to the value of the number they correspond to; in a number line containing only whole numbers or integers, the points are equally spaced. Opposite A number that is the same distance from zero as a given number, but on the opposite side of zero. For example, 7 and -7 are opposites, and -9 and 9 are opposites. Positve Numbers The set of numbers to the right of zero on the number line--numbers greater than zero. Rational Numbers The set of numbers including all the integers, plus all the fractions, or terminating decimals and repeating decimals. Every rational number can be written as a fraction a/b, where a and b are integers. Real Numbers Thye set of all the rational numbers and all the irrational numbers. Whole Numbers The set of numbers including all the natural numbers and zero--