One Digit Numbers
| 0 | 1 | 2 | 3 | 4 |
| Zero | One | Two | Three | Four |
| 5 | 6 | 7 | 8 | 9 |
| Five | Six | Seven | Eight | Nine |
Zero(0) is the smallest one-digit number.
9 is the largest one-digit number.
Two- Digit Number
Two-digit numbers start from 10 and end at 99
10 is the smallest two-digit number.
99 is the largest two-digit number.
Exercise Based on One-digit and Two-digit Numbers
Exercise 1: Write the number for each of the following
| Numbers | Number In Words |
| 2 | Two |
| 6 | Six |
| 11 | Eleven |
| 13 | Thirteen |
| 16 | Sixteen |
| 24 | Twenty - four |
| 42 | Forty - Two |
| 55 | Fifty - Five |
| 62 | Sixty - Two |
| 74 | Seventy - Four |
| 77 | Seventy - Seven |
| 81 | Eighty one |
| 94 | Ninety Four |
| 36 | Thirty Six |
| 63 | Sixty Three |
| 49 | Forty Nine |
| 97 | Ninety Seven |
| 80 | Eighty |
| 99 | Ninety Nine |
Exercise 2 : Write the digit used for following numbers in numerals.
- Sixteen ? 1 and 6 = 16
- Thirty - Two ? 3 and 2 = 32
- Fifty- Eight ? 5 and 8 = 58
- Twenty ? 2 and 0 = 20
- Forty-One ? 4 and 1 = 41
- Eighty-Two ? 8 and 2 = 82
- Forty-Six ? 4 and 6 = 46
- Seventy-nine ? 7 and 9 = 79
- Ninety-Five ? 9 and 5 = 95
- Sixty-One ? 6 and 1 = 61
Expanded Form of a Number
There are 90 two-digit numbers. A two-digit number shows number of tens and number of Ones.
For Example:
56 is a two-digit number. It has 5 Tens and 6 Ones.
Therefore, 56 = 5 Tens and 6 Ones (In Words)
And 56 = 50 + 6 (In Figure)
Exercise Based on Expanded Form
Exercise 1: Write the Expanded form of the following.
In Words In Figures
26 = 2 Tens + 6 Ones 20 + 6
62 = 6 Tens + 2 Ones 60 + 2
45 = 4 Tens + 5 Ones 40 + 5
84 = 8 Tens + 4 Ones 80 + 4
91 = 9 Tens + 1 Ones 90 + 1
Exercise 2: Write the corresponding correct numerals and its number name.
7 tens + 2 ones = 72 = Seventy Two
1 tens + 8 ones = 18 = Eighteen
3 tens + 5 ones = 35 = Thirty Five
5 tens + 6 ones = 56 = Fifty Six
7 tens + 4 ones = 74 = Seventy four
Comparison between Two Number
As in the case of smaller number, see the order of the number to be compared in the sequence of counting. A number which comes after wards in the sequence is greater than a number which comes before.
Practice Question Based on Comparison of Two Numbers
Exercise 1: Compare two number find Greater or Lesser or equal to (<,>, =)
1) 12 ....... 14
Solution1 : 12 < 14
2) 13 .........10
Solution2: 13 > 10
3) 6..........5
Solution 3 : 6 > 5
4) 22 ........ 45
Solution 4: 45 > 22
5) 80 ...... 99
Solution 5: 80 < 99