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Working with Numbers to 100

One Digit Numbers

01234
ZeroOneTwo ThreeFour
56789
FiveSixSevenEightNine

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

NumbersNumber 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.

  1. Sixteen ? 1 and 6 = 16
  2. Thirty - Two ? 3 and 2 = 32
  3. Fifty- Eight ? 5 and 8 = 58
  4. Twenty ? 2 and 0 = 20
  5. Forty-One ? 4 and 1 = 41
  6. Eighty-Two ? 8 and 2 = 82
  7. Forty-Six ? 4 and 6 = 46
  8. Seventy-nine ? 7 and 9 = 79
  9. Ninety-Five ? 9 and 5 = 95
  10. 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

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