
Ms. Garcia Math 


absolute value 
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The absolute value x of a real number is the numerical value of a number without regard to its sign. (We use a vertical bar on each side of the quantity) 
5= 5 




Real Number 
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A real number is a value that represents a quantity along a number line. (rational or irrational) 





Rational 
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Rational numbers are the ratios of integers, also called fractions 
1/2, 2/3, 5/8 




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 nonzero.
The square roots of all numbers which are not perfect squares are irrational 





Integers 
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A number with no fractional part. Includes the set of positive whole numbers {1, 2, 3, . . . }, negative whole numbers {1, 2, 3, . . . }, and zero {0}. 
5, 0, 10 




Absolute Value of an Integer 
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The number of units a number is from zero on the number line. 







