Praxis II: Math (5003) Latest Update Graded A+

Praxis II: Math (5003) Latest Update Graded A+ Integers Positive and Negative Whole Numbers; Includes 0 Prime Number A whole number greater than 1 that only has two factors (itself and 1) Composite Number A whole number greater than 1 that has more than two different factors Rational Numbers All integers, decimals and fractions; any terminating or repeating decimal number Irrational Numbers Cannot be written as fractions or decimals because the number of decimal places is infinite and there is no recurring pattern of digits within the number (e.g. pi) Real Numbers Set of all rational and irrational numbers Order of Operations PEMDAS M/D and A/S are worked left to right in order Commutative Property The order of two numbers may be switched around and the answer is the same *THINK COMMUTE = move Associative Property Grouping numbers together does not change the value *THINK ASSOCIATE = group Distributive Property a(b + c) = ab + ac Additive Identity Property a + 0 = a Additive Inverse Property Any (+) number added to its opposite (-) is equal to zero Multiplicative Identity Property 1 is the multiplicative identity such that a x 1=a Multiplicative Inverse Property