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Middle School Math

Middle school math builds the bridge between arithmetic and algebra. In grades 6 through 8, students master fractions, decimals, and percents; learn about ratios and proportions; explore basic geometry and measurement; and begin working with variables and equations. This page organizes every middle-school-level math term on Mathwords by topic so you can find exactly what you need.

Absolute Value5

Absolute value definition, equations, inequalities, and rules

Algebra Vocabulary & General Concepts71

Core algebra vocabulary, properties, and general mathematical concepts

Angles & Lines60

Types of angles, angle relationships, parallel lines, transversals, and perpendiculars

Area & Perimeter18

2D measurement formulas for area and perimeter of common shapes

Arithmetic Operations & Exponents63

Basic arithmetic operations, exponents, powers, roots, and order of operations

Bounds, Intervals & Ordering10

Upper/lower bounds, bounded sets, intervals, and ordering concepts

Circles22

Circle properties, arcs, sectors, chords, tangent lines, and inscribed angles

Conic Sections16

Ellipses, hyperbolas, circles, and their equations

Coordinate Geometry & Analytic Methods46

Coordinate plane, distance formula, midpoint, analytic geometry, and coordinate systems

Data Display & Visualization10

Histograms, box plots, scatter plots, and data visualization methods

Descriptive Statistics9

Mean, median, mode, standard deviation, variance, and measures of spread

Exponentials & Logarithms21

Exponential functions, logarithms, growth/decay, and their properties

Factors, Multiples & Divisibility24

Factors, multiples, GCF, LCM, prime factorization, and divisibility

Financial Mathematics20

Interest, annuities, present/future value, and financial formulas

Fractions & Decimals59

Fractions, decimals, mixed numbers, and operations with fractions

Functions & Relations51

Function notation, domain, range, types of functions, and function operations

Geometric Transformations16

Reflections, rotations, translations, dilations, and isometries in geometry

Geometry Foundations17

Foundational geometry concepts, planes, measurement units, non-Euclidean geometry, and general vocabulary

Graph Transformations & Symmetry25

Translations, reflections, stretches, compressions, and symmetry of graphs

Inference & Regression17

Linear regression, correlation, hypothesis testing, and statistical inference

Linear Equations & Graphs42

Slope, linear equations, systems of equations, and graphing lines

Measurement, Estimation & Notation129

Measurement, scientific notation, rounding, significant digits, and mathematical notation

Number Systems & Properties32

Algebraic properties, number classifications, and equivalence relations

Number Types & Classification66

Types of numbers: integers, rationals, reals, primes, composites, and number classification systems

Platonic Solids & Polyhedra18

Regular polyhedra, Euler's formula for polyhedra, and special 3D shapes

Polynomials & Factoring46

Polynomial operations, factoring, synthetic division, and polynomial theorems

Precalculus Analysis & Methods11

Function analysis, advanced algebra connections, and precalculus methods

Probability & Counting17

Combinations, permutations, probability rules, and counting principles

Probability Fundamentals16

Probability rules, conditional probability, Bayes theorem, and probability calculations

Quadrilaterals & Polygons66

Quadrilaterals, regular polygons, and their properties

Regression & Correlation9

Linear regression, correlation, least squares, and data relationships

Set Theory29

Sets, set operations, Venn diagrams, and set notation

Statistics & Data Displays27

Descriptive statistics, data visualization, distributions, and sampling

Surface Area & Volume46

3D measurement: surface area and volume of prisms, cylinders, cones, spheres, and other solids

Triangles & Congruence56

Triangle types, congruence tests, special lines in triangles, and triangle properties

Variation & Proportion14

Direct, inverse, and joint variation; proportional relationships

Patterns Sequences Elementary0
Data Display Elementary1
Numeral Systems0
Mathematical Constants1
Number Theory & Modular Arithmetic14
Inequalities & Interval Notation1
number-systems-bases1
mathematical-notation2
reference-materials2
math-vocabulary-reference1
Percents1
Ratio Models1
Consumer Math2
Asymptotic Notation1
Ratios Proportions1
Sets1
Unit Conversion1
Powers And Roots1
Integers1
Factors And Multiples1
Business Math1
Linear Algebra2
Inequalities1
Proportions1
Number Systems2
Graph Theory1
Factorial Family1
Figurate Numbers1
All Middle School Math Terms A–Z (802)