## Fraction

A fraction is a real number written as a quotient, or ratio, of two integers \(a\) and \(b\), where \(b\neq 0\). \[\dfrac{a}{b}\] The integer above the fraction bar \(a\) is called the numerator and the integer below \(b\) is called the denominator. The numerator is often called the “part” and the denominator is often called the “whole”. Equivalent fractions are two equal ratios expressed … Leggi tuttoFraction

## Decimals

A decimal numeral, or just decimal, or, improperly decimal number, refers generally to the notation of a number in the decimal system, which contains a decimal separator: for example 3.14; the decimal separator is the dot “.” in many countries, but may be a comma “,” in other countries (mainly in Europe). The numbers that may be represented in the decimal system … Leggi tuttoDecimals

## Natural (or counting) numbers

The set of natural (or counting) numbers, denoted with \(\mathbb{N}\), is: \[\{1,2,3,4,5,6,7,…\}\] The three periods (…) is called an ellipsis and indicates that the numbers continue without bound.