What are the natural numbers, and what are the natural numbers

Natural number. There are an infinite number of them, including positive integers and 0s, such as ...

Real numbers include 0, positive integers, negative integers, finite decimals, infinitesimal decimals, and so on.

The following is a mind map of real numbers.

A natural number is a number of things that are used to measure things or to represent the order of things. i.e. digital 0, 1, 2, 3, 4 ......The number represented. Natural numbers start with 0 and follow each other to form an infinite collective.

Natural numbers are orderly, infinite. It is divided into even and odd numbers, composite numbers and prime numbers, etc.

2. Classification of natural numbers.

According to whether it is an even number: it can be divided into odd and even numbers.

1. Odd number: A number that is not divisible by 2 is called an odd number.

2. Even numbers: Numbers divisible by 2 are called even numbers. That is, except for odd numbers, they are even numbers.

Note: 0 is an even number. (In 2002, the International Mathematical Association stipulated that zero is an even number.) In 2004, zero was also an even number. Even numbers are divisible by 2, and 0 is fine, but the number is still 0).

According to the number of factors: it can be divided into prime numbers, composite numbers, 1 and 0.

1. Prime number: A natural number with only two factors, 1 and itself, is called a prime number. Also known as prime numbers.

2. Composite number: A natural number that has other factors besides 1 and itself is called a composite number.

There is only 1 factor. It is neither prime nor composite.

4. Of course, 0 cannot be calculated as a factor, and like 1, it is neither a prime number nor a composite number.

Note: The factor here is not a divisor.

The sum of five consecutive natural numbers is 120, what are these five natural numbers?

The sum of three consecutive natural numbers is 135, what are these three natural numbers?

All the best! In this way, no one will feel that others are happy that they can't talk, yes, and sometimes they are.

There are infinite numbers of nature.

A natural number is a number of things that are used to measure things or to represent the order of things. i.e. digital 0, 1, 2, 3, 4 ......The number represented. Natural numbers start with 0 and follow each other to form an infinite collective.

Natural numbers are orderly, infinite. It is divided into even and odd numbers, composite numbers and prime numbers, etc.

Common concepts. Natural numbers are integers (natural numbers include positive integers and zeros), but integers are not all natural, for example: -1 -2 -3....It's an integer and not a natural number. Natural numbers are infinite.

The set of all non-negative integers is called a set of non-negative integers, i.e., a set of natural numbers.

When counting objects, the number that is counted is called a natural number. Natural numbers have two meanings: quantity and order, and are divided into cardinal numbers and ordinal numbers.

Basic unit: counting unit: one, ten, hundred, thousand, thousand, ten thousand, one hundred thousand.

In short, a natural number is an integer greater than or equal to 0. Of course, negative numbers, decimals, fractions, etc., are not counted.

Definition of natural number: It is a number used to measure the number of things or the order of things, including 0 and positive integers.

Therefore there are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 ,..All the way to infinity, there are an infinite number of them.

Zeros and positive integers are collectively referred to as natural numbers, i.e., they are ,...... with the numbers 0, 1, 2, 3, and 4The number represented.

In short, a natural number is an integer greater than or equal to 0.

Anyway, it starts with 0, and a number greater than 0 is a natural number. There are infinite numbers of nature, infinitely large.

Natural numbers include positive integers and 0, i.e. It must not be negative.

There are infinite natural numbers, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.

The concept of natural numbers refers to the number of pieces used to measure things or to express the number of things in pieces. i.e. digital 0, 1, 2, 3, 4 ......The number represented. Natural numbers start from 0 and follow each other to form an infinite collective.

There are addition and multiplication operations in the set of natural numbers, and the result of adding or multiplying two natural numbers is still a natural number, and it can also be subtracted or divided, but the results of subtraction and division may not be natural numbers, so subtraction and division operations are not always true in the set of natural numbers. Natural numbers are the most basic of all the numbers that people know.

Natural number application

1. The natural number series has the most extensive use in the "number series", because in all the number series, the serial numbers of each item constitute the natural number series.

The general formula of any series of numbers can be seen as a fixed quantitative relationship between the number of each item in the series and its ordinal number.

2. When finding how many angles can be composed of n rays, the first n terms and formulas of the natural number series are applied.

The first ray and the other rays form (n-1) angles, the second ray and the remaining rays form (n-2) angles, and so on: 1+2+3+4+......n-1=n（n-1）/2

3. When finding how many line segments there are n points on a straight line, the first n terms and formulas of the natural number series are also applied.

The first point and other points form (n-1) line segments, the second point and the remaining points form (n-2) line segments, and so on: 1+2+3+4+......n-1=n（n-1）/2

Natural numbers include positive integers and zeros.

Natural numbers are integers, but integers are not all natural numbers, for example: -1 -2 -3 ......It's an integer and not a natural number. Natural numbers are infinite.

When counting objects, count the ......It's called a natural number. Natural numbers have two meanings: quantity and order, and are divided into cardinal numbers and ordinal numbers.

In short, a natural number is an integer greater than or equal to 0. Of course, negative numbers, decimals, fractions, etc., are not counted.

Natural Number Properties:

1. When the number of objects is not expressed, 0 no longer means "no", but indicates a specific meaning. For example, today's temperature is 0 degrees Celsius.

2. The denominator is a fraction of 1, and its fractional value is equal to the numerator.

and 0, which is neither prime nor composite.

4. If the sum of the digits of a number is divisible by 3, the number must be divisible by 3. For example, 63249 3=21083.

5. The number on each digit is a multiple of 3, and this number must be divisible by 3. For example, 369 3=123;369963÷3=123321。

There are infinite numbers of nature. Natural numbers can start from 0 and be arranged in a sequence without repeating or omitting: 0, 1, 2, 3, ,...This sequence is called a natural sequence.

If the elements of a set can establish a one-to-one correspondence with a natural sequence or a part of a natural sequence, we say that the set is countable, otherwise it is said to be uncountable.

The principle of minimum numbers.

There must be the smallest number in any non-empty subset of the set of natural numbers. A set of numbers with properties is called a linear order set. It is easy to see that the set of rational numbers and the set of real numbers are linear order sets.

But neither of these sets of numbers has the property 5, for example, the set of all numbers of the form nm (m>n, m, n are natural numbers) is a nonempty subset of the set of rational numbers, and this set does not have a minimum number; The open interval (0,1) is a non-empty subset of the set of real numbers, and it also does not have a minimum number.

Natural numbers are positive integers and 0s. In the past, there has been a debate about whether 0 is a natural number or not. Because in nature, positive integers like 1, 2, 3, 4, and so on can be represented in real terms.

However, in recent years, all math books have given a clear rule that 0 is included in natural numbers.

Introduction: Nature is a non-negative integer, i.e. the numbers 0, 1, 2, 3, 4, 5 ,......The number represented, i.e., all integers except negative integers, is also commonly referred to as a natural number.

Basic definition: Non-negative integers are positive integers and zeros. That is, all integers except negative integers. In the early days of the use of this term, some people thought that "non-negative" was a translation of "true", and later a graduate student invented the concept of what is now called "non-negative integer" when arguing this problem, and this range is still in the academic **.

A given integer n can be negative, non-negative, zero, or positive.

Like these are natural numbers, there are countless natural numbers anyway.

Natural numbers have etc.

A natural number is a number of things that are used to measure things or to represent the order of things. Natural numbers start with 0 and follow each other to form an infinite collective.

Natural numbers are the earliest numbers in human history, and natural numbers have a wide range of applications in counting and measurement. People also often use natural numbers to number or order things, such as city bus routes, house numbers, zip codes, etc.

There are 1234 and so on, and everything except 0 is a natural number.

A natural number is a number of things that are used to measure things or to represent the order of things. i.e. digital 0, 1, 2, 3, 4 ......The number represented.

Natural numbers start with 0 and follow each other to form an infinite collective. Natural numbers are orderly, infinite. It is divided into even and odd numbers, composite numbers and prime numbers, etc.

Number series 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 ,......n, which is called a natural sequence.

The general formula for natural sequences is an=n.

The first n terms of the natural series and sn=n(n+1) 2. sn=na1+n（n-1）/2

The natural sequence is essentially an equal difference sequence, with the first term a1 = 1 and the tolerance d = 1.

There are infinite numbers of nature.

If you want to calculate the natural number it is impossible because it is innumerable, but the number can be counted, there are only ten numbers, namely 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, commonly known as Arabic numerals. They can be trapped to combine any composite number. There are infinite numbers, but there are only 10 numbers.

The number of pieces used to measure things or the order of things. i.e. digital 0, 1, 2, 3, 4 ......The number represented.

The number that represents the number of objects is called a natural number, and the natural number starts from 0 (including 0), one after the other, forming an infinite collective yardstick such as.