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question		réponse
number commencer à apprendre		an abstract entity that represents a count or measurement
numeral commencer à apprendre		a symbol or group of symbols, or a word in a natural language that represents a numbers. It differs from a number just as a word differs from the thing it reffers to
(numerical) digit commencer à apprendre		in mathematics and computer science, it is a symbol used in numerals to represent numbers in positional numeral systems
integers commencer à apprendre		they consist of the positive natural numbers, their negatives and the number zero; informally known as "whole numbers"
natural numbers commencer à apprendre		either the positive integers or the non-negative integers
rational numbers commencer à apprendre		they can be expressed as a ratio of two integers; usually written as the vulgar fraction a/b, where b is not zero
irrational numbers commencer à apprendre		they just cannot be expressed as a ratio of two integers; an example is pi
real numbers commencer à apprendre		they can be given an infinite decimal representation
prime numbers/prime commencer à apprendre		it is a natural number that has exactly two natural divisors, which are 1 and this number itself
parity commencer à apprendre		this term refers to objects being even or odd
even numbers commencer à apprendre		they are multiples of 2
odd numbers commencer à apprendre		they are not multiples of 2

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