Table Of Contents
315 LearnersLast updated on February 13th, 2025
Odd Numbers 1 to 100
The numbers that are not divisible by 2 are known as Odd numbers. They always follow a pattern and appear one after the other, for example: 1, 3, 5, 7, and 9. Odd numbers are essential in our daily lives, from counting apples and chairs to traffic and technology.
Odd Numbers 1 to 100
You now know that numbers that cannot be divided by 2 are called odd numbers. They follow a specific sequence,
alternating with even numbers.
The odd numbers from 1 to 100 are listed below:
1, 3, 5, 7, 9, 11, 13, 15, 17…, 99
Odd Numbers 1 to 100 Chart
Learning odd numbers can be made easier with a visual representation that helps children understand the concept better. The tabular representation enables them to identify the sequence of odd numbers more effectively. Let’s go through the chart below:
List of Odd Numbers 1 to 100
Odd numbers cannot be evenly divided by 2; they always leave a remainder of 1 when divided by 2. They follow the rule of progression, where 2 is added to each previous number. Let’s now look at the pattern followed by the odd numbers from 1 to 100, which goes like this: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21…, 99.
| List of Odd Numbers | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 17 |
| 19 | 21 | 23 | 25 | 27 | 29 | 31 | 33 | 35 |
| 37 | 39 | 41 | 43 | 45 | 47 | 49 | 51 | 53 |
| 55 | 57 | 59 | 61 | 63 | 65 | 67 | 69 | 71 |
| 73 | 75 | 77 | 79 | 81 | 83 | 85 | 87 | 89 |
| 91 | 93 | 95 | 97 | 99 | ||||
The Sum of Odd Numbers 1 to 100
Odd numbers can be summed up using the formula: Sum = n², where ‘n’ is the number of odd numbers. To find the
sum, first check how many odd numbers are in the 1 to 100 range. There are a total of 50 odd numbers.
Therefore, Sum = n² = 50² = 2500.
Thus, 2500 is the sum of all odd numbers from 1 to 100.
Subtraction of Odd Numbers 1 to 100
Subtraction of odd numbers is determined by simply subtracting one odd number from another, which always results in an even number.
For example, 9 (odd) - 1 (odd) = 8 (even).
Odd Prime Numbers 1 to 100
Prime numbers are the numbers that have only 2 divisors: 1 and the number itself. Prime numbers that are odd
are termed odd prime numbers. All the prime numbers, except 2 are odd. There are a total of 24 odd prime
numbers in the range from 1 to 100.
Key Points to Remember:
- Odd numbers are the numbers indivisible by 2. For example.,1,3,5,7, etc.
- It is an odd number if the sequence follows by adding 2 to the previous number. E.g. 1 + 2 = 3, 3 + 2 = 5, 5 + 2 = 7
- The mathematical formula for the calculation of the sum total of all the odd numbers is n2
- Starting from 1, there are a total of 50 odd numbers in the range from 1 to 100.
- All the prime numbers except 2 are odd; therefore, there are 24 odd prime numbers between 1 and 100.
Odd Numbers 1 to 100 Examples
Problem 1
The seller offers packs of 3, 5, 7, or 9 books each. If a person decides to purchase 5 packs, what is the maximum number of books they could receive?
Explanation
Problem 2
A company holds a meeting and the seats are arranged in rows, increasing by 2 seats per row. There are 11 rows, and the first row has 1 seat. How many total seats are there in the school?
Explanation
Problem 3
A lady is hosting a magic show, and she wants to arrange the seating in rows with an odd number of seats. The first row has 1 seat, the second row has 5 seats, the third row has 7 seats, and so on. If she arranges 5 rows, how many seats does she need in total?
Explanation
Problem 4
Allen is counting his stamp collection. He puts them into odd-numbered stacks where the first stack contains 3, the second stack contains 5 stamps, and so on. If Allen forms 7 stacks, how many stamps does Allen have?
Explanation
Problem 5
Riya has 25 pens, which is an odd number. If she gives away 9 pens to her sister, how many pens will Riya have left?
Explanation
FAQs on Odd Numbers 1 to 100
1.How many odd numbers are there from 1 to 100?
2.How to identify odd numbers?
3.Are all odd numbers prime numbers?
4.Can we take 1 as an odd number?
5.What is the formula for an odd number?
Important Glossaries for Odd Numbers 1 to 100
- Odd Numbers: when a number is divided by 2, and the remainder is non-zero, then it is called an odd number. Example: 7 ÷ 2 = quotient = 3 and remainder = 1, 7 is an odd number
- Prime Numbers: A whole number greater than 1 can only be divided by 1 and itself. It has no other divisors. Example: 2, 3, 5, and 7 are prime numbers these are only divisible by 1 and itself
- Subtraction: Subtraction is a process of finding out the difference between two numbers, by reducing one number from another. Example: 8–2 = 6, here we are subtracting 2 from 8 which gives the answer 6.
- Even Numbers: When a number is divided by 2 and it gives the remainder as 0 it is called an even number. Example: 8 ÷ 2 = quotient = 4 and remainder 0, 8 is an even number
- Divisible: A number is said to be divisible by another number, when divided it should give the remainder as zero. Example: 10 ÷ 2 = Quotient = 5 and remainder = 0, hence we can conclude that 10 is divisible by 2
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Hiralee Lalitkumar Makwana
About the Author
Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.
Fun Fact
: She loves to read number jokes and games.
