D125 - Mathematics for Elementary Educators I WGU D125 Questions and answers with complete solution graded A+ (Already passed)

Numbers - CORRECT ANS A word or symbol (such as "five" or "16" ) that represents a specific amount or quantity Set - CORRECT ANS A collection of things. In the context of math, these are usually collections of numbers Whole Numbers - CORRECT ANS 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 Integers - CORRECT ANS A number (positive, negative, or zero) that can be represented without a fractional or a decimal component Positive Number - CORRECT ANS A number whose value is greater than zero. On the number line, positive numbers are to the right of zero. Negative Number - CORRECT ANS A number whose value is less than zero. On the number line, negative numbers are to the left of zero. Number Line - CORRECT ANS A line in which points are matched to real numbers. The numbers increase in value as you move to the right. Rational Numbers - CORRECT ANS Any number that can be represented as a quotient of two integers. Decimal numbers that either terminate or repeat are rational numbers. Fraction - CORRECT ANS Essentially a part of a whole number denoted by a slash, /, or a fraction bar, -. A fraction contains two integers, separated by a slash or fraction bar. Decimal - CORRECT ANS A number with a whole number part, decimal point, and decimal part. The whole number may be zero. Terminating Decimals - CORRECT ANS A decimal with a finite number of digits Recurring Decimals - CORRECT ANS A decimal with a digit or string of digits that repeats forever Irrational Numbers - CORRECT ANS Numbers that cannot be represented as a fraction of two integers. Decimals do not terminate or repeat. Square Roots - CORRECT ANS For a given number, this is the number that produces the given number when multiplied by itself Perfect Square - CORRECT ANS The product of any integer with itself yields a perfect square. So, a number is a perfect square if it can be written as the square of an integer. For example, 9 is a perfect square because 3 * 3 = 9 Real Numbers - CORRECT ANS Any number on the number line. Real numbers include whole numbers, integers, rational numbers, and irrational numbers Divisible - CORRECT ANS The quality of producing a quotient that is an integer Factors - CORRECT ANS An integer that evenly divides another integer Prime Number - CORRECT ANS An integer greater than 1 that has only two positive factors: one and itself (2, 3, and 5 for example) Composite Number - CORRECT ANS An integer that has factors other than itself and 1 Factorization - CORRECT ANS The process of finding the prime factors of a composite num