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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 Value4

Absolute value definition, equations, inequalities, and rules

Algebra Vocabulary & General Concepts64

Core algebra vocabulary, properties, and general mathematical concepts

Angles & Lines58

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

Area & Perimeter18

2D measurement formulas for area and perimeter of common shapes

Arithmetic Operations & Exponents53

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

Bounds, Intervals & Ordering9

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 Methods45

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 & Divisibility18

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

Financial Mathematics16

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

Fractions & Decimals52

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 Foundations16

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 & Graphs40

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

Measurement, Estimation & Notation107

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

Number Systems & Properties28

Algebraic properties, number classifications, and equivalence relations

Number Types & Classification51

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 & Counting16

Combinations, permutations, probability rules, and counting principles

Probability Fundamentals16

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

Quadrilaterals & Polygons60

Quadrilaterals, regular polygons, and their properties

Regression & Correlation9

Linear regression, correlation, least squares, and data relationships

Set Theory23

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 & Proportion13

Direct, inverse, and joint variation; proportional relationships

Patterns Sequences Elementary0
Data Display Elementary1
Numeral Systems0
Mathematical Constants1
Number Theory & Modular Arithmetic8
Inequalities & Interval Notation1
number-systems-bases1
mathematical-notation2
reference-materials1
All Middle School Math Terms A–Z (802)