Praxis II Elementary Ed: Math Exam | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+

Cardinal number : Tells how many. Example: 9 players on a baseball team Ordinal number : a number used to tell order or sequence, 1st 2nd, 3rd.... Base system : A place-value system in which each place value is 10 times larger than the place value to its right. Scientific notation : using powers of 10 to express large numbers (43,700 is 4.37x10 to the 4) Prime number : a whole number that has exactly two factors, 1 and itself. (ex: 2, 3, 5...) Composite number : a whole number greater than 1 that has more than 2 factors. (opposite of prime numbers...4, 6, 8...) Greatest common factor : The largest factor that two or more numbers have in common. 2 | P a g e Least common multiple : the smallest multiple that is exactly divisible by every member of a set of numbers (of 12 and 18 , the least common multiple is 36) Equivalent forms : a number can be represented in more than one way (2, 4/2...or...1/2,%50,.5...) Factor tree : showing the prime factors of a number in a simple diagram Commutative property : The order of two numbers may be switched around and the answer is the same. (a+b=b+a) Associative property : changing the grouping does not change their sum or product (a+b)c=(c+a)b Distributive property : a property indicating a special way in which multiplication is applied to addition of two or more numbers in which each term inside a set of parentheses can be multiplied by a factor outside the parentheses, such as a(b + c) = ab + ac Order of operations : PEMDAS, Please excuse my dear aunt sally; parenthesis, exponents, multiplication, division, addition, subtraction Modeling operations : concerte method- working with real objects semiconcrete- the students work with visual rep