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WGU Math D125 Final Exam (100+ Terms & Definitions) – Fractions, Prime Factorization, Operations, Number Types | 2025/2026 | Western Governors University

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This document provides over 100 key math terms and definitions specifically designed for the WGU Math D125 course (Mathematics for the Modern World), tailored for the 2025/2026 academic year. Created as a complete vocabulary and concept review, it covers foundational mathematics essential for general education, teacher licensure preparation, or non-STEM degree tracks. Organized in a clean Q&A format, the material thoroughly defines mathematical terms with clear examples and simplified explanations, making it highly effective for visual, auditory, and practical learners. The content focuses on: Types of Numbers: Whole numbers, integers, rational and irrational numbers, real numbers, prime and composite numbers Mathematical Operations & Properties: Addition, subtraction, multiplication, division, commutative and associative properties, estimation strategies Number Forms & Values: Expanded form, standard form, decimal representation, place value, and rounding techniques Factorization & Divisibility: Prime factorization, factor pairs, greatest common factor (GCF), least common multiple (LCM), divisibility rules Expressions & Equations: Multi-step expressions, order of operations (PEMDAS), parentheses use, absolute value, and operation symbols Fractions & Decimals: Types (terminating, recurring), converting forms, operations with fractions, decimal estimation Visual Concepts: Number lines, rectangular arrays, exponents, superscripts, base-10 numerals Practical Math: Estimation techniques (front-end estimation), composing and decomposing numbers, math symbols and operators This guide is ideal for: • WGU students enrolled in D125 • Adult learners returning to math • Prospective teachers in elementary or middle school math tracks • Students preparing for general education math assessments Perfect for quick reference, test prep, or concept reinforcement, this document ensures a strong grasp of basic math literacy for academic success. Keywords: WGU Math D125, math definitions, prime factorization, rational numbers, irrational numbers, factor pairs, order of operations, fractions and decimals, math operations, number line, GCF and LCM, base-10 system, place value, estimation strategies, math for educators

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WGU Math D125 2025/2026 Exam
Questions with 100% Correct Answers |
Latest Update



fraction - 🧠 ANSWER ✔✔This contains two integers, separated by a slash

or fraction bar.


Fundamental Theorem of Arithmetic - 🧠 ANSWER ✔✔every integer greater

than 1 is prime

or is the product of prime numbers

ex: 2 is prime, 4 is 2x2.


rational number - 🧠 ANSWER ✔✔Any number that can be represented as a

fraction of two integers. Equivalently, any number which has a decimal that

either terminates or repeats.


prime factorization - 🧠 ANSWER ✔✔the determination of the set of prime

numbers which multiply together to give the original integer

, whole number - 🧠 ANSWER ✔✔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.


Integer - 🧠 ANSWER ✔✔A number (positive, negative, or zero) that can be

represented without a fractional or a decimal component.


square root - 🧠 ANSWER ✔✔For a given number, this is the number that

produces the given number when multipled by itself.


quotient - 🧠 ANSWER ✔✔the result of division


Factor - 🧠 ANSWER ✔✔a number that divides evenly into another number.


positive number - 🧠 ANSWER ✔✔A number whose value is greater than

zero. On the number line, these oppear to the right of zero.


Division - 🧠 ANSWER ✔✔splitting into equal parts or groups.


real number - 🧠 ANSWER ✔✔Any number on the number line.


GCF - 🧠 ANSWER ✔✔For two or more whole numbers, this is the greatest

number that divides evenly into all the numbers.

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