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