WGU C955 - Module 1 Flashcards with complete solutions.

set In mathematics: a collection of numbers. identity property The property that 0 can be added to any number without changing the value of the number. Likewise, 1 can be multiplied by any number without changing the value of that number. prime number A number with only two factors: one and itself. factor An integer that divides another integer. We say an integer, x, is a factor of another integer, y, if the quotient y/x is also equal to an integer. superscript A symbol (such as a number or letter) written above and immediately to the left or right of another character. order of operations A set of rules that defines the order in which mathematical operations should be performed estimation Approximating a value for a calculation rational number A rational number is a number that can be written as a ratio of integers, which means it can be written as a fraction. parentheses In mathematics, parentheses () are used to separate operations within an expression. Any operations that lie within parentheses should be performed first. radical sign The symbol which indicates to take the square root of the number that follows. operation In mathematics, an operation is a procedure which generates a new value from one or more operands, or mathematical values. subtraction Taking one or more values away from another. factor tree A graphical method used to identify the prime factorization of an integer. positive number A number whose value is greater than zero. On the number line, positive numbers are to the right of zero. integer A number, (positive, negative, or zero), that can be represented without a fractional or a decimal component. interval A set of numbers between two specified values. real number Any numbers on the number line. Real numbers include zero, negative and positive integers, fractions, and decimals. commutative The property that the order of the numbers under the operation does not change the result. Addition and multiplication are commutative: a + b = b + a and ab = ba. multi-step expression An expression or equation with more than two values and two or more operators that requires multiple steps to be solved. discrete A collection of numbers whose values are distinct, separate, and unconnected. square root A number that produces a specified number when it is multiplied by itself. operators A word or symbol (such as + or -) that indicates an operation between values. sum The result of multiple numbers being added together. addition Finding the total of two or more values. associative property The associative property holds that under certain operations in a multi-step expression, the computations may be done in any order. Commonly represented as (a + b) + c = a + (b + c). Addition and multiplication are associative. negative number A number whose value is less than zero. On the number line, negative numbers are to the left of zero. whole number A number whose value is 0 or greater (negative numbers are not considered whole numbers) and can be represented without a fractional or a decimal component. base number The number multiplied by itself when paired with an exponent. For example, in 8 to the third power, 8 would be the base number. factorization The process of determining the prime factors of a composite number. additive inverse Two numbers equidistant from 0 on a number line whose sum is 0. For example, 3 and -3 are additive inverses. quotient The result of a division expression. expressions A string of terms that are connected by division, addition, and subtraction operations. negative square root The negative square root of a perfect square. For example, -6 is the negative square root of 36.