# Math Praxis Flashcards 1

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 terms that have the same variables raised to the same exponent. e.g. 3x2 and -2x2. like terms distributive property adding two numbers and then multiplying by another yields the same result as multiplying each one by the number and then adding the products. i.e. a(b + c) = ab + ac, or (a+b)c = ac + bc. E.g. 2(3 + 5) = 2x3 + 2x5. multiplicative inverses two numbers whose product is 1. factor tree a diagram representing a systematic way of determining all the prime factors of a number. frustum the region a solid cone or pyramid between the base and a plane parallel to the base. histogram a type of statistical graph that uses bars, where each bar represents a range of values and the data is continuous. inequality a mathematical sentence that includes one of the symbols >, <, or the symbols for greater than or equal to, less than or equal to, or not equal. centroid the point of intersection of the three medians of a triangle. commutative property the order of numbers in a calculation does not affect the result. e.g. Addition is commutative since a + b = b + a. E.g. 3 + 5 = 5 + 3. Subtraction is not commutative since 8 - 2 and 2 - 8 are not equal. composite number a whole number (integer) that has more than 2 different factors. e.g. 18 has factors 1, 18, 2, 9, 3, 6 so it is composite