Class 7 Maths Integers Introduction

Natural Numbers

  • Numbers that come naturally to us are Natural numbers.For example, 1,2,3, 4,…

Count the number of fingers in your hand 1,2,3,4……10, these are natural numbers.

           

What exist below 1? 

Suppose you have 5 chocolates and now you give one chocolate to one of your friend, now you are left with four, similarly you distribute remaining four to other friends, hence you are left with no chocolate or zero chocolate.

Whole Numbers

  • Numbers starting from 0,1,2,3,4,5,6……………. are called Whole numbers

Note: The whole numbers start with 0 while natural numbers start with 1,2,3,4..

What exist below 0?

  • The numbers below 0 are -1, -2, -3,-4,-5,-6,-7……….. .

Examples: Suppose you borrow one chocolate from your elder brother then you will have one chocolate and that should be counted as -1.
In the Antarctica region the temperature goes well below 0, the temperature usually over there is -10

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