Mathematics is used everywhere in our day to day activities. Every day, we make use of numbers in reading, writing, calculating and measuring
different units of measurements.
Numbers from 1 – 99.
Reading, Understanding, and Writing Numbers from 1 – 9.
1 |
One |
---|---|
2 |
Two |
3 |
Three |
4 |
Four |
5 |
Five |
6 |
Six |
7 |
Seven |
8 |
Eight |
9 |
Nine |
From the above table, we have learnt and understood numbers from 1 to 9 in digits and words. All these are one-digit numbers.
- One-digit numbers are called ones or units.
- The first one-digit number is 1, so it is the smallest one-digit number.
- The last one-digit number is 9, which is the greatest one-digit number.
Reading, Understanding, and Writing Numbers from 10 – 99.
By adding 1 more to 9, we get 10, and we call it ten in words.
10 |
Ten |
20 |
Twenty |
30 |
Thirty |
40 |
Forty |
50 |
Fifty |
---|---|---|---|---|---|---|---|---|---|
11 |
Eleven |
21 |
Twenty One |
31 |
Thirty One |
41 |
Forty One |
51 |
Fifty-one |
12 |
Twelve |
22 |
Twenty-Two |
32 |
Thirty-Two |
42 |
Forty-Two |
52 |
Fifty Two |
13 |
Thirteen |
23 |
Twenty Three |
33 |
Thirty-Three |
43 |
Forty-Three |
53 |
Fifty Three |
14 |
Fourteen |
24 |
Twenty Four |
34 |
Thirty Four |
44 |
Forty Four |
54 |
Fifty Four |
15 |
Fifteen |
25 |
Twenty Five |
35 |
Thirty Five |
45 |
Forty Five |
55 |
Fifty Five |
16 |
Sixteen |
26 |
Twenty Six |
36 |
Thirty Six |
46 |
Forty Six |
56 |
Fifty Six |
17 |
Seventeen |
27 |
Twenty Seven |
37 |
Thirty Seven |
47 |
Forty Seven |
57 |
Fifty Seven |
18 |
Eighteen |
28 |
Twenty Eight |
38 |
Thirty Eight |
48 |
Forty Eight |
58 |
Fifty Eight |
19 |
Nineteen |
29 |
Twenty Nine |
39 |
Thirty Nine |
49 |
Forty Nine |
59 |
Fifty Nine |
60 |
Sixty |
70 |
Seventy |
80 |
Eighty |
90 |
Ninety |
---|---|---|---|---|---|---|---|
61 |
Sixty One |
71 |
Seventy One |
81 |
Eighty One |
91 |
Ninety One |
62 |
Sixty Two |
72 |
Seventy Two |
82 |
Eighty Two |
92 |
Ninety Two |
63 |
Sixty Three |
73 |
Seventy Three |
83 |
Eighty Three |
93 |
Ninety Three |
64 |
Sixty Four |
74 |
Seventy Four |
84 |
Eighty Four |
94 |
Ninety Four |
65 |
Sixty Five |
75 |
Seventy Five |
85 |
Eighty Five |
95 |
Ninety Five |
66 |
Sixty Six |
76 |
Seventy Six |
86 |
Eighty Six |
96 |
Ninety Six |
67 |
Sixty Seven |
77 |
Seventy Seven |
87 |
Eighty Seven |
97 |
Ninety Seven |
68 |
Sixty Eight |
78 |
Seventy Eight |
88 |
Eighty Eight |
98 |
Ninety Eight |
69 |
Sixty Nine |
79 |
Seventy Nine |
89 |
Eighty Nine |
99 |
Ninety Nine |
From the above table, we have learned and understood numbers from 10 to 99 in digits and words. All these are tens digit numbers.
- Two-digit numbers are called tens.
- The first two-digit number is 10, so it is the smallest two-digit number.
- The last two-digit number is 99, and so it is the greatest two number.
Reading, Understanding, and Writing Three-Digits Numbers
By adding 1 more to 99, we get 100, and we call it a hundred or one hundred in words.
Let us know the three-digit numbers or hundred numbers.
100 |
101 |
102 |
103 |
104 |
105 |
106 |
107 |
108 |
109 |
---|
Similarly, by adding 1 to the numbers from 110 and above, we can get numbers up to 999.
- Three-digit numbers are called hundreds.
- The first three-digit number is 100, so it is the smallest three-digit number.
- The last three-digit number is 999, and so it is the greatest three-digit number.
Reading, Understanding, and Writing Four Digits Numbers
By adding 1 more to 999, we get 1000, and we call it thousand or one thousand in words.
Let us know the four-digit numbers or thousand numbers.
1000 |
1001 |
1002 |
1003 |
1004 |
1005 |
1006 |
1007 |
1008 |
1009 |
---|
- Four-digit numbers are called thousands.
- The first four-digit number is 1001 and so it is the smallest four-digit number.
- The last four-digit number is 9999 and so it is the greatest four-digit number.
Place Value
We have learned about one-digit numbers. The numbers 1 to 9 are all one-digit numbers. We call them units or ones.
Let us learn the place value of digits in two-digit numbers. The numbers 10 to 99 are all two-digit numbers. We call them tens.
For example- 29
Here, the place value of 2 is tens, and 9 is units or ones.
Let us learn the place value of digits in three-digit numbers.
The numbers 100 to 999 are all three-digit numbers. We call them hundreds.
For example – 365
Here, the place value of 3 is hundreds, 6 is tens, and 5 is units or ones.
Expanded Form of Numbers
To know the place value of digits of a number, we look at the number of digits on the right side of that digit and put the same number of zeros to the right of that digit.
The place value of zero (0) is always ‘0’ in all the places.
In the number 95:
The place value of 9 is 90, and 5 is 5.
In the expanded form, 95 is written as 95 = 90 + 5
Similarly,
In the number 471:
The place value of 4 is 400
The place value of 7 is 70
The place value of 1 is 1
In the expanded form, 471 is written as 471 = 400 + 70 + 1
In the number 2896:
The place value of 2 is 2000
The place value of 8 is 800
The place value of 9 is 90
The place value of 6 is 6
In the expanded form, 2896 is written as 2896 = 2000 + 800 + 90 + 6.
Stay tuned to BYJU’S for more information on NIOS, syllabus, notes, along with its important questions and solutions
Comments