Integer

Oleh -

A. INTEGER

1. Definition of Integer

Integers are the numbers which consist of whole numbers and negative numbers ( the opposite of natural numbers) such as ..., -3, -2, -1, 0, 1, 2, 3, .....

The integers can be illustrated in the form of number line as shown in the following :


The numbers in the right side of 0, i.e 1, 2, 3, ... are called positive integers

· The numbers in the left side of 0, i.e 1, 2, 3, ... are called negative integers

Natural number is any whole number greater than zero. So natural number consist of 1,

2, 3, ...

While whole number is number that consist of 0 and natural numbers.

Negative number is the opposite of natural number.

2. The Order of Integer


The order of integer from 0 to the rights is to increase. It is written it as 0

The order of integer from 0 to the left is to decrease. It is written it as -3<-2<-1

To be more clear, consider the following picture.


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