# CLASS-9CONCEPT OF NATURAL, INTEGERS, FRACTION, AND WHOLE NUMBERS

CONCEPT OF NATURAL, INTEGERS, FRACTION, AND WHOLE NUMBERS -

As per the earlier discussion, we have learned about natural numbers, whole numbers, Integers, and Fraction. What exactly has been discussed below it's just a revision. So, go through the entire content and refresh yourself and moreover below content will definitely help you out to understand the further advanced stages of mathematics.

1) Natural Numbers

The counting numbers are called natural numbers, thus 1, 2, 3, 4, 5,……….., etc are natural numbers

2) Whole Numbers

All counting numbers together with 0 form the collection of all whole numbers, thus, 0, 1, 2, 3, 4, 5, 6,……………, etc., are whole numbers. We can say every natural number will be considered as a whole number. But, zero ‘0’ is a whole number which is not a natural number.

3) Integers

All whole numbers and the negatives of all counting numbers form the collection of all integers, thus, ……., -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6,………………form the collection of all integers

4) Fractions

x

The numbers of the form -------, where x & y are natural numbers, are

y

called fractions.

8        15       34       41        47

as example, ------, ------, ------, ------, -------

15        22       37       22       105