# match210.6

 Natural Numbers counting numbers{1,2,3, ...} Whole Numbers counting numbers w/ 0{0,1,2,3, ...} Integers {..., -3, -2, -1, 0, 1, 2, 3, ...} Rational Numbers Numbers that can be expressed as a ratio of 2 other numbers a/b where b cannon equal zero3 = 3/11/2 = 0.5 Irrational Numbers Numbers that cannot be expressed as a ratio of 2 numbers a/bpi= 3.14... (never repeats, never terminates)non-perfect squares √2, √3, √5 Rules for working with integers 1. For any number x, -x is termed the inverse of x if the following relationship applies:x+(-x)=02. For any # x, -(-x)=x3. 0 is neither positive or negative Absolute Value for any # x, except 0, the absolute value will always be a positive number x|x|>0 Number Line graph of all integers & everything else in between (fractions, decimals), all real numbers0 is originL»R increaseR«L decreaseabsolute value tells how far from origin pointthe number line is used to illustrate addition & subtraction of integers compound interest A=P(1+r/n)ntA= balance amountB= principalr= interest raten= compounding numbert= time compound interest \$1,000, compounded quarterly, 3 years P= \$1,000r= 8%n=4t= 3 A= 1000(1+ .08/1)(4)(3) Scientific Notation express very large & very small numbersformat: base x 10exponent or power10> base ≥ 1 exponent » integer(1-9.999), 2.5x102 Author_robg_ ID10547 Card Setmatch210.6 Descriptionmath 210 unit 6 Updated2010-03-15T04:15:54Z Show Answers