number system

Digits and rules

A number system is a method for representing and expressing numbers using a consistent set of symbols and rules.

The most familiar is the decimal system, which uses ten digits (0-9) and place value based on powers of ten.

Other systems include binary (base-2, used in computing), hexadecimal (base-16), and Roman numerals.

Children learn the number system before they can do arithmetic.

The term also applies more broadly to mathematical structures like integers, rationals, or complex numbers.

Related

base ten · octal · ternary · place value · duodecimal · tens · digits · counting · tally · hundreds · calculator · notation · ones · mathematics · math class · decimal · zero · cipher

Categories
Opposites
STRUCTURED vs. UNSTRUCTURED REPRESENTATION

number systeminnumeracy

Lack of quantitative understanding

numberlessness · tally marks

QUANTITATIVE vs. QUALITATIVE SYSTEMS

number systemclassification system

Scheme for organizing categories

writing system · symbolic language

ABSTRACT SYSTEM vs. CONCRETE VALUES

number systemquantities

Measured amounts or numbers

magnitudes · raw data

Family

number, system, numbers, systematic, systemic, numbering, numeral, numerical, enumerate

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G