What is One Hundred Nine?

S0-SA1-1086

Grade Level:

Pre-School – Class 2

All domains without exception

Definition

What is it?

One Hundred Nine is a number. It comes after 108 and before 110. It is written as '109' using digits and 'one hundred nine' in words.

Simple Example

Quick Example

Imagine your favourite cricket team scored 108 runs in the first innings. If they score just one more run, their total score will become 109 runs. So, 109 is one more than 108.

Worked Example

Step-by-Step

Let's find the number that is 10 more than 99.
1. We start with the number 99.
2. We need to add 10 to it.
3. So, we calculate 99 + 10.
4. Adding the ones place: 9 + 0 = 9.
5. Adding the tens place: 9 + 1 = 10.
6. Combining these, we get 109.
---The number that is 10 more than 99 is 109.

Why It Matters

Understanding numbers like 109 is fundamental for all of mathematics and science. It helps you count, measure, and solve problems in daily life. This skill is crucial for careers like becoming a data analyst, an engineer, or even managing a business.

Common Mistakes

MISTAKE: Writing '1009' for one hundred nine | CORRECTION: Remember 'one hundred nine' means 1 hundred, 0 tens, and 9 ones, so it's '109'.

MISTAKE: Confusing 'one hundred nine' with 'one nine' (which means 19) | CORRECTION: The 'hundred' part is important; it tells you it's a three-digit number with a 1 in the hundreds place.

MISTAKE: Thinking 109 is an even number | CORRECTION: 109 is an odd number because its last digit, 9, is odd. Even numbers always end in 0, 2, 4, 6, or 8.

Practice Questions

Try It Yourself

QUESTION: What number comes just after 108? | ANSWER: 109

QUESTION: If you have 100 rupees and someone gives you 9 more rupees, how much money do you have? | ANSWER: 109 rupees

QUESTION: A bus has 100 seats. 9 seats are empty. How many passengers are on the bus? | ANSWER: 100 - 9 = 91 (This question tests careful reading. If 9 seats are empty, it means 91 passengers are on the bus. But if the question was '100 seats and 9 extra seats were added', then it would be 109. This highlights the importance of context.)

MCQ

Quick Quiz

Which of these represents 'one hundred nine'?

1009

109

190

The Correct Answer Is:

Option C, 109, correctly shows one hundred, zero tens, and nine ones. Options A, B, and D represent different numbers.

Real World Connection

In the Real World

When you buy groceries, the bill might come to Rs 109. If you check your mobile data usage, you might have used 109 MB of data. Even in cricket, a player might score 109 runs, which is a great score!

Key Vocabulary

Key Terms

NUMBER: A count or measure | DIGIT: A single symbol used to write numbers (0-9) | ODD NUMBER: A number that cannot be divided exactly by 2 (e.g., 1, 3, 5, 109) | PLACE VALUE: The value of a digit based on its position in a number (e.g., in 109, the '1' is in the hundreds place)

What's Next

What to Learn Next

Now that you understand 109, you can learn about larger numbers and how they are used in addition, subtraction, multiplication, and division. Keep practicing, and you'll become a number expert!