# Why the natural numbers are so called?

They are the numbers that are used for counting objects. They form the basis of the number system. Even so, why "natural", and not primary (like in colours) I don't know.

### Why does every integer have an opposite?

The numbers 1,2,3,... etc are called natural numbers or counting numbers. Integers are the natural numbers plus zero plus the negative ( or opposite ) natural numbers. Why do we need negative natural numbers ? For one thing x + 1 = 0 is an equation whose solution is x = -1. We could not solve this equation if we did not have negative integers. So over history these negative numbers came about as a…

### What all the counting numbers?

1to9 are counting numbers Counting numbers are positive whole numbers and not zero. They can also be called 'natural numbers'. They are so called because when you count, you start at +1, then +2, +3 and continue on in this... That would be zero, and negative integers. "Counting numbers" refers to integers (whole numbers) that are positive (larger than zero).

### What is the relationship between whole numbers integers natural numbers and rational numbers?

Whole numbers are usually defined as the number 0,1,2,3,4,5,6.... where "...." means it goes on forever. These are the natural numbers with the number 0 added to them. So the natural numbers are 1,2,3,4,5,6... The integers are all the whole number and all the negatives of the natural numbers. ...-4,-3,-2,-1,0,1,2,3,4... So every whole number is an integer. Every natural number is an integer. Every integer is NOT a whole number. ( look at -2) Every…

### What are even positive natural numbers?

even numbers are exactly divisible by two. ie. they do not give a remainder when divided by 2. natural numbers are positive integers starting from 1. even natural numbers are a combination of both.. eg. 2,4,50 etc the term positive is not required for these numbers because, natural numbers are positive !... so positive 'natural number' is like saying ' approximated estimate '..