Definition of counting numbers:
Counting numbers are those numbers that we used to count any things or objects.
There are two distinct ways numbers relate to set of objects and these are referred to as the Cardinal and Ordinal aspects of numbers.
A number is used in one sense to denote the size of a set.
Important points:
1. Counting numbers starts from 1.
2. Counting numbers could not be negative.
Let us count down the numbers from 1 to 20.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
Counting Numbers: 21 to 100
As the counting numbers has no ending point, here let us count down the numbers from 21 to 100.
| 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
| 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 |
| 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 |
| 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 |
| 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 |
| 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 |
| 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 |
| 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 |
Numbers from 1 to 20 in Words:
| 1 | One |
| 2 | Two |
| 3 | Three |
| 4 | Four |
| 5 | Five |
| 6 | Six |
| 7 | Seven |
| 8 | Eight |
| 9 | Nine |
| 10 | Ten |
| 11 | Eleven |
| 12 | Twelve |
| 13 | Thirteen |
| 14 | Fourteen |
| 15 | Fifteen |
| 16 | Sixteen |
| 17 | Seventeen |
| 18 | Eighteen |
| 19 | Nineteen |
| 20 | Twenty |
Is 0 a Counting Number ?
No.
Zero is not a counting number as the counting number starts only from 1.
Is -10 a Counting Number?
No.
Counting numbers are not negative numbers.
They are always positive.